diff --git a/lib/web3/client.ts b/lib/web3/client.ts
index e41e345455..d89fcac808 100644
--- a/lib/web3/client.ts
+++ b/lib/web3/client.ts
@@ -2,10 +2,18 @@ import { createPublicClient, http } from 'viem';
 
 import currentChain from './currentChain';
 
-export const publicClient = createPublicClient({
-  chain: currentChain,
-  transport: http(),
-  batch: {
-    multicall: true,
-  },
-});
+export const publicClient = (() => {
+  if (currentChain.rpcUrls.public.http.filter(Boolean).length === 0) {
+    return;
+  }
+
+  try {
+    return createPublicClient({
+      chain: currentChain,
+      transport: http(),
+      batch: {
+        multicall: true,
+      },
+    });
+  } catch (error) {}
+})();
diff --git a/ui/block/useBlockQuery.tsx b/ui/block/useBlockQuery.tsx
index 7e4caf90db..5d60edc7b4 100644
--- a/ui/block/useBlockQuery.tsx
+++ b/ui/block/useBlockQuery.tsx
@@ -50,6 +50,10 @@ export default function useBlockQuery({ heightOrHash }: Params): BlockQuery {
   const rpcQuery = useQuery<RpcResponseType, unknown, Block | null>({
     queryKey: [ 'RPC', 'block', { heightOrHash } ],
     queryFn: async() => {
+      if (!publicClient) {
+        return null;
+      }
+
       const blockParams = heightOrHash.startsWith('0x') ? { blockHash: heightOrHash as `0x${ string }` } : { blockNumber: BigInt(heightOrHash) };
       return publicClient.getBlock(blockParams).catch(() => null);
     },
@@ -86,13 +90,13 @@ export default function useBlockQuery({ heightOrHash }: Params): BlockQuery {
       };
     },
     placeholderData: GET_BLOCK,
-    enabled: apiQuery.isError || apiQuery.errorUpdateCount > 0,
+    enabled: publicClient !== undefined && (apiQuery.isError || apiQuery.errorUpdateCount > 0),
     retry: false,
     refetchOnMount: false,
   });
 
   React.useEffect(() => {
-    if (apiQuery.isPlaceholderData) {
+    if (apiQuery.isPlaceholderData || !publicClient) {
       return;
     }
 
@@ -109,7 +113,7 @@ export default function useBlockQuery({ heightOrHash }: Params): BlockQuery {
     }
   }, [ rpcQuery.data, rpcQuery.isPlaceholderData ]);
 
-  const isRpcQuery = Boolean((apiQuery.isError || apiQuery.isPlaceholderData) && apiQuery.errorUpdateCount > 0 && rpcQuery.data);
+  const isRpcQuery = Boolean(publicClient && (apiQuery.isError || apiQuery.isPlaceholderData) && apiQuery.errorUpdateCount > 0 && rpcQuery.data);
   const query = isRpcQuery ? rpcQuery as UseQueryResult<Block, ResourceError<{ status: number }>> : apiQuery;
 
   return {
diff --git a/ui/block/useBlockTxQuery.tsx b/ui/block/useBlockTxQuery.tsx
index eafd168659..49a637b187 100644
--- a/ui/block/useBlockTxQuery.tsx
+++ b/ui/block/useBlockTxQuery.tsx
@@ -63,6 +63,10 @@ export default function useBlockTxQuery({ heightOrHash, blockQuery, tab }: Param
   const rpcQuery = useQuery<RpcResponseType, unknown, BlockTransactionsResponse | null>({
     queryKey: [ 'RPC', 'block_txs', { heightOrHash } ],
     queryFn: async() => {
+      if (!publicClient) {
+        return null;
+      }
+
       const blockParams = heightOrHash.startsWith('0x') ?
         { blockHash: heightOrHash as `0x${ string }`, includeTransactions: true } :
         { blockNumber: BigInt(heightOrHash), includeTransactions: true };
@@ -125,13 +129,13 @@ export default function useBlockTxQuery({ heightOrHash, blockQuery, tab }: Param
       };
     },
     placeholderData: GET_BLOCK_WITH_TRANSACTIONS,
-    enabled: tab === 'txs' && (blockQuery.isDegradedData || apiQuery.isError || apiQuery.errorUpdateCount > 0),
+    enabled: publicClient !== undefined && tab === 'txs' && (blockQuery.isDegradedData || apiQuery.isError || apiQuery.errorUpdateCount > 0),
     retry: false,
     refetchOnMount: false,
   });
 
   React.useEffect(() => {
-    if (apiQuery.isPlaceholderData) {
+    if (apiQuery.isPlaceholderData || !publicClient) {
       return;
     }
 
@@ -151,7 +155,7 @@ export default function useBlockTxQuery({ heightOrHash, blockQuery, tab }: Param
   const isRpcQuery = Boolean((
     blockQuery.isDegradedData ||
     ((apiQuery.isError || apiQuery.isPlaceholderData) && apiQuery.errorUpdateCount > 0)
-  ) && rpcQuery.data);
+  ) && rpcQuery.data && publicClient);
 
   const rpcQueryWithPages: QueryWithPagesResult<'block_txs'> = React.useMemo(() => {
     return {
diff --git a/ui/block/useBlockWithdrawalsQuery.tsx b/ui/block/useBlockWithdrawalsQuery.tsx
index 670238793a..423032cf47 100644
--- a/ui/block/useBlockWithdrawalsQuery.tsx
+++ b/ui/block/useBlockWithdrawalsQuery.tsx
@@ -65,6 +65,10 @@ export default function useBlockWithdrawalsQuery({ heightOrHash, blockQuery, tab
   const rpcQuery = useQuery<RpcResponseType, unknown, BlockWithdrawalsResponse | null>({
     queryKey: [ 'RPC', 'block', { heightOrHash } ],
     queryFn: async() => {
+      if (!publicClient) {
+        return null;
+      }
+
       const blockParams = heightOrHash.startsWith('0x') ? { blockHash: heightOrHash as `0x${ string }` } : { blockNumber: BigInt(heightOrHash) };
       return publicClient.getBlock(blockParams).catch(() => null);
     },
@@ -89,6 +93,7 @@ export default function useBlockWithdrawalsQuery({ heightOrHash, blockQuery, tab
     },
     placeholderData: GET_BLOCK,
     enabled:
+      publicClient !== undefined &&
       tab === 'withdrawals' &&
       config.features.beaconChain.isEnabled &&
       (blockQuery.isDegradedData || apiQuery.isError || apiQuery.errorUpdateCount > 0),
@@ -97,7 +102,7 @@ export default function useBlockWithdrawalsQuery({ heightOrHash, blockQuery, tab
   });
 
   React.useEffect(() => {
-    if (apiQuery.isPlaceholderData) {
+    if (apiQuery.isPlaceholderData || !publicClient) {
       return;
     }
 
@@ -117,7 +122,7 @@ export default function useBlockWithdrawalsQuery({ heightOrHash, blockQuery, tab
   const isRpcQuery = Boolean((
     blockQuery.isDegradedData ||
     ((apiQuery.isError || apiQuery.isPlaceholderData) && apiQuery.errorUpdateCount > 0)
-  ) && rpcQuery.data);
+  ) && rpcQuery.data && publicClient);
 
   const rpcQueryWithPages: QueryWithPagesResult<'block_withdrawals'> = React.useMemo(() => {
     return {
diff --git a/ui/pages/Address.tsx b/ui/pages/Address.tsx
index fdb5db012e..1b12c37401 100644
--- a/ui/pages/Address.tsx
+++ b/ui/pages/Address.tsx
@@ -67,7 +67,7 @@ const AddressPageContent = () => {
   const userOpsAccountQuery = useApiQuery('user_ops_account', {
     pathParams: { hash },
     queryOptions: {
-      enabled: Boolean(hash),
+      enabled: Boolean(hash) && config.features.userOps.isEnabled,
       placeholderData: USER_OPS_ACCOUNT,
     },
   });
@@ -160,16 +160,18 @@ const AddressPageContent = () => {
     ].filter(Boolean);
   }, [ addressQuery.data, contractTabs, addressTabsCountersQuery.data, userOpsAccountQuery.data ]);
 
+  const isLoading = addressQuery.isPlaceholderData || (config.features.userOps.isEnabled && userOpsAccountQuery.isPlaceholderData);
+
   const tags = (
     <EntityTags
       data={ addressQuery.data }
-      isLoading={ addressQuery.isPlaceholderData }
+      isLoading={ isLoading }
       tagsBefore={ [
         !addressQuery.data?.is_contract ? { label: 'eoa', display_name: 'EOA' } : undefined,
         addressQuery.data?.implementation_address ? { label: 'proxy', display_name: 'Proxy' } : undefined,
         addressQuery.data?.token ? { label: 'token', display_name: 'Token' } : undefined,
         isSafeAddress ? { label: 'safe', display_name: 'Multisig: Safe' } : undefined,
-        userOpsAccountQuery.data ? { label: 'user_ops_acc', display_name: 'Smart contract wallet' } : undefined,
+        config.features.userOps.isEnabled && userOpsAccountQuery.data ? { label: 'user_ops_acc', display_name: 'Smart contract wallet' } : undefined,
       ] }
     />
   );
@@ -189,8 +191,6 @@ const AddressPageContent = () => {
     };
   }, [ appProps.referrer ]);
 
-  const isLoading = addressQuery.isPlaceholderData;
-
   const titleSecondRow = (
     <Flex alignItems="center" w="100%" columnGap={ 2 } rowGap={ 2 } flexWrap={{ base: 'wrap', lg: 'nowrap' }}>
       { addressQuery.data?.ens_domain_name && (
@@ -241,7 +241,7 @@ const AddressPageContent = () => {
       <AddressDetails addressQuery={ addressQuery } scrollRef={ tabsScrollRef }/>
       { /* should stay before tabs to scroll up with pagination */ }
       <Box ref={ tabsScrollRef }></Box>
-      { (addressQuery.isPlaceholderData || addressTabsCountersQuery.isPlaceholderData || userOpsAccountQuery.isPlaceholderData) ?
+      { (isLoading || addressTabsCountersQuery.isPlaceholderData) ?
         <TabsSkeleton tabs={ tabs }/> :
         content
       }
diff --git a/ui/pages/Transaction.tsx b/ui/pages/Transaction.tsx
index 3078a74e2b..37a3043227 100644
--- a/ui/pages/Transaction.tsx
+++ b/ui/pages/Transaction.tsx
@@ -7,6 +7,7 @@ import config from 'configs/app';
 import { useAppContext } from 'lib/contexts/app';
 import throwOnResourceLoadError from 'lib/errors/throwOnResourceLoadError';
 import getQueryParamString from 'lib/router/getQueryParamString';
+import { publicClient } from 'lib/web3/client';
 import TextAd from 'ui/shared/ad/TextAd';
 import EntityTags from 'ui/shared/EntityTags';
 import PageTitle from 'ui/shared/Page/PageTitle';
@@ -33,7 +34,7 @@ const TransactionPageContent = () => {
   const txQuery = useTxQuery();
   const { data, isPlaceholderData, isError, error, errorUpdateCount } = txQuery;
 
-  const showDegradedView = (isError || isPlaceholderData) && errorUpdateCount > 0;
+  const showDegradedView = publicClient && (isError || isPlaceholderData) && errorUpdateCount > 0;
 
   const tabs: Array<RoutedTab> = (() => {
     const detailsComponent = showDegradedView ?
@@ -97,8 +98,10 @@ const TransactionPageContent = () => {
     return <RoutedTabs tabs={ tabs }/>;
   })();
 
-  if (error?.status === 422) {
-    throwOnResourceLoadError({ resource: 'tx', error, isError: true });
+  if (isError && !showDegradedView) {
+    if (error?.status === 422 || error?.status === 404) {
+      throwOnResourceLoadError({ resource: 'tx', error, isError: true });
+    }
   }
 
   return (
diff --git a/ui/tx/TxDetails.tsx b/ui/tx/TxDetails.tsx
index 61ee2196ea..f72012a234 100644
--- a/ui/tx/TxDetails.tsx
+++ b/ui/tx/TxDetails.tsx
@@ -1,6 +1,7 @@
 import React from 'react';
 
 import TestnetWarning from 'ui/shared/alerts/TestnetWarning';
+import DataFetchAlert from 'ui/shared/DataFetchAlert';
 
 import TxInfo from './details/TxInfo';
 import type { TxQuery } from './useTxQuery';
@@ -10,6 +11,10 @@ interface Props {
 }
 
 const TxDetails = ({ txQuery }: Props) => {
+  if (txQuery.isError) {
+    return <DataFetchAlert/>;
+  }
+
   return (
     <>
       <TestnetWarning mb={ 6 } isLoading={ txQuery.isPlaceholderData }/>
diff --git a/ui/tx/TxDetailsDegraded.tsx b/ui/tx/TxDetailsDegraded.tsx
index a486de3400..0793a9e46a 100644
--- a/ui/tx/TxDetailsDegraded.tsx
+++ b/ui/tx/TxDetailsDegraded.tsx
@@ -36,6 +36,10 @@ const TxDetailsDegraded = ({ hash, txQuery }: Props) => {
   const query = useQuery<RpcResponseType, unknown, Transaction | null>({
     queryKey: [ 'RPC', 'tx', { hash } ],
     queryFn: async() => {
+      if (!publicClient) {
+        throw new Error('No public RPC client');
+      }
+
       const tx = await publicClient.getTransaction({ hash: hash as `0x${ string }` });
 
       if (!tx) {
diff --git a/ui/tx/TxUserOps.tsx b/ui/tx/TxUserOps.tsx
index 8f313650b7..33cc899f7d 100644
--- a/ui/tx/TxUserOps.tsx
+++ b/ui/tx/TxUserOps.tsx
@@ -2,6 +2,7 @@ import React from 'react';
 
 import { USER_OPS_ITEM } from 'stubs/userOps';
 import { generateListStub } from 'stubs/utils';
+import DataFetchAlert from 'ui/shared/DataFetchAlert';
 import useQueryWithPages from 'ui/shared/pagination/useQueryWithPages';
 import TxPendingAlert from 'ui/tx/TxPendingAlert';
 import TxSocketAlert from 'ui/tx/TxSocketAlert';
@@ -28,6 +29,10 @@ const TxUserOps = ({ txQuery }: Props) => {
     return txQuery.socketStatus ? <TxSocketAlert status={ txQuery.socketStatus }/> : <TxPendingAlert/>;
   }
 
+  if (txQuery.isError) {
+    return <DataFetchAlert/>;
+  }
+
   return <UserOpsContent query={ userOpsQuery } showTx={ false }/>;
 };
 
diff --git a/ui/userOps/UserOpsContent.tsx b/ui/userOps/UserOpsContent.tsx
index 5416dc3a35..8d2b8c756c 100644
--- a/ui/userOps/UserOpsContent.tsx
+++ b/ui/userOps/UserOpsContent.tsx
@@ -26,7 +26,7 @@ const UserOpsContent = ({ query, showTx = true, showSender = true }: Props) => {
       <Hide below="lg" ssr={ false }>
         <UserOpsTable
           items={ query.data.items }
-          top={ query.pagination.isVisible ? 0 : 80 }
+          top={ query.pagination.isVisible ? 80 : 0 }
           isLoading={ query.isPlaceholderData }
           showTx={ showTx }
           showSender={ showSender }