diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1be6e53b90..6d77235946 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,14 +4,22 @@ All notable changes to this project will be documented in this file. Dates are d
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+#### [v6.76.1](https://github.com/opengovsg/FormSG/compare/v6.76.0...v6.76.1)
+
+- fix: invalid mixed digit input [`#6701`](https://github.com/opengovsg/FormSG/pull/6701)
+- build: release v6.76.0 [`#6698`](https://github.com/opengovsg/FormSG/pull/6698)
+
 #### [v6.76.0](https://github.com/opengovsg/FormSG/compare/v6.75.1...v6.76.0)
 
+> 7 September 2023
+
 - fix: remove index from myinfo child question name [`#6697`](https://github.com/opengovsg/FormSG/pull/6697)
 - feat: update config for efs uninterrupted availability [`#6691`](https://github.com/opengovsg/FormSG/pull/6691)
 - docs(undp): add steps to migrate from mongodb in README [`#6695`](https://github.com/opengovsg/FormSG/pull/6695)
 - fix: update Myinfo occupation list [`#6684`](https://github.com/opengovsg/FormSG/pull/6684)
 - build: merge v6.75.1 into develop [`#6690`](https://github.com/opengovsg/FormSG/pull/6690)
 - * feat: % rollout of new storage submission endpoint (#6665) [`#6688`](https://github.com/opengovsg/FormSG/pull/6688)
+- chore: bump version to v6.76.0 [`389d2aa`](https://github.com/opengovsg/FormSG/commit/389d2aa0814798b4b44ff17a373e6c59ca4292dc)
 
 #### [v6.75.1](https://github.com/opengovsg/FormSG/compare/v6.75.0...v6.75.1)
 
@@ -193,11 +201,16 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 > 18 July 2023
 
 - revert: build(deps): bump winston-cloudwatch version to 6.2.0 [`#6542`](https://github.com/opengovsg/FormSG/pull/6542)
+- chore: bump version to v6.66.0 [`b3a9818`](https://github.com/opengovsg/FormSG/commit/b3a9818762e334bc7126c029cdba63156bac85ed)
 
 #### [v6.66.0](https://github.com/opengovsg/FormSG/compare/v6.65.0...v6.66.0)
 
-> 18 July 2023
+> 19 July 2023
 
+- fix: use proof-of-payment for payment receipt/invoice [`#6549`](https://github.com/opengovsg/FormSG/pull/6549)
+- build(deps-dev): bump word-wrap from 1.2.3 to 1.2.4 in /frontend [`#6548`](https://github.com/opengovsg/FormSG/pull/6548)
+- fix(deps): bump word-wrap from 1.2.3 to 1.2.4 [`#6547`](https://github.com/opengovsg/FormSG/pull/6547)
+- build(deps): bump winston-cloudwatch to v6.2.0 [`#6545`](https://github.com/opengovsg/FormSG/pull/6545)
 - fix(deps): [Snyk] Security upgrade mongoose from 5.13.15 to 5.13.20 [`#6541`](https://github.com/opengovsg/FormSG/pull/6541)
 - feat: indicate if GST has been applied to a payment transaction [`#6538`](https://github.com/opengovsg/FormSG/pull/6538)
 - chore: reduce max payment limit [`#6543`](https://github.com/opengovsg/FormSG/pull/6543)
@@ -209,7 +222,7 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 - build: merge v6.65.0 into develop [`#6531`](https://github.com/opengovsg/FormSG/pull/6531)
 - build: release v6.65.0 [`#6528`](https://github.com/opengovsg/FormSG/pull/6528)
 - fix: add FE validation rule that email domains must be non empty [`#6529`](https://github.com/opengovsg/FormSG/pull/6529)
-- chore: bump version to v6.66.0 [`b3a9818`](https://github.com/opengovsg/FormSG/commit/b3a9818762e334bc7126c029cdba63156bac85ed)
+- chore: bump version to v6.66.0 [`0233ba8`](https://github.com/opengovsg/FormSG/commit/0233ba8018532d4978d13717fac065f81e2eb515)
 
 #### [v6.65.0](https://github.com/opengovsg/FormSG/compare/v6.64.0...v6.65.0)
 
@@ -709,13 +722,13 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 - fix: add staging-alt2 to deployment script [`#6019`](https://github.com/opengovsg/FormSG/pull/6019)
 - build: merge release 6.38.0 to develop [`#6017`](https://github.com/opengovsg/FormSG/pull/6017)
 - build: release v6.38.0 [`#6004`](https://github.com/opengovsg/FormSG/pull/6004)
-- feat: more logging on fetch fallback [`#6008`](https://github.com/opengovsg/FormSG/pull/6008)
 - chore: bump version to v6.39.0 [`081515a`](https://github.com/opengovsg/FormSG/commit/081515a2521c950dac7261f4b6c1b1b423c3af16)
 
 #### [v6.38.0](https://github.com/opengovsg/FormSG/compare/v6.37.0...v6.38.0)
 
-> 29 March 2023
+> 30 March 2023
 
+- feat: more logging on fetch fallback [`#6008`](https://github.com/opengovsg/FormSG/pull/6008)
 - feat: implement fetch API fallback for network error [`#5948`](https://github.com/opengovsg/FormSG/pull/5948)
 - fix: lowercase collaborator endpoint emails [`#5992`](https://github.com/opengovsg/FormSG/pull/5992)
 - chore(deps-dev): bump @typescript-eslint/parser from 5.56.0 to 5.57.0 in /shared [`#5995`](https://github.com/opengovsg/FormSG/pull/5995)
@@ -724,7 +737,6 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 - fix(deps): bump type-fest from 3.7.0 to 3.7.1 in /shared [`#5991`](https://github.com/opengovsg/FormSG/pull/5991)
 - build: merge v6.37.0 into develop  [`#5989`](https://github.com/opengovsg/FormSG/pull/5989)
 - build: release v6.37.0 [`#5988`](https://github.com/opengovsg/FormSG/pull/5988)
-- chore: bump version to v6.38.0 [`d199213`](https://github.com/opengovsg/FormSG/commit/d19921314cae6b79920cf5ec3fb4f396794816d6)
 
 #### [v6.37.0](https://github.com/opengovsg/FormSG/compare/v6.36.0...v6.37.0)
 
diff --git a/frontend/src/features/admin-form/create/builder-and-design/BuilderAndDesignDrawer/FieldListDrawer/field-panels/PaymentsInputPanel/ProductModal.tsx b/frontend/src/features/admin-form/create/builder-and-design/BuilderAndDesignDrawer/FieldListDrawer/field-panels/PaymentsInputPanel/ProductModal.tsx
index d72102def0..0776a52b65 100644
--- a/frontend/src/features/admin-form/create/builder-and-design/BuilderAndDesignDrawer/FieldListDrawer/field-panels/PaymentsInputPanel/ProductModal.tsx
+++ b/frontend/src/features/admin-form/create/builder-and-design/BuilderAndDesignDrawer/FieldListDrawer/field-panels/PaymentsInputPanel/ProductModal.tsx
@@ -41,6 +41,12 @@ const MIN_QTY_KEY = `min_qty`
 const MAX_QTY_KEY = `max_qty`
 const DISPLAY_AMOUNT_KEY = 'display_amount'
 const MULTI_QTY_KEY = 'multi_qty'
+
+const parseIntElseNull = (val: string) => {
+  const parsedInt = parseInt(val, 10)
+  return Number.isNaN(parsedInt) ? null : parsedInt
+}
+
 export const ProductModal = ({
   onClose,
   onSaveProduct,
@@ -125,28 +131,37 @@ export const ProductModal = ({
     onClose()
   })
 
-  const minQtyValidation: RegisterOptions<ProductInput, typeof MIN_QTY_KEY> = {
-    validate: (val) => {
+  const minQtyValidation: RegisterOptions = {
+    validate: (valStr: string) => {
       if (!getValues(MULTI_QTY_KEY)) return true
-      if (val <= 0) {
+
+      const valNumber = parseIntElseNull(valStr)
+      if (!valNumber || valNumber <= 0) {
         return 'Enter a value greater than 0'
       }
-      if (val > getValues(MAX_QTY_KEY)) {
+
+      const maxNumber =
+        parseIntElseNull(getValues(MAX_QTY_KEY) as unknown as string) ||
+        Number.MAX_SAFE_INTEGER
+
+      if (valNumber > maxNumber) {
         return 'Enter a value smaller than the maximum quantity'
       }
       return true
     },
   }
-  const maxQtyValidation: RegisterOptions<ProductInput, typeof MAX_QTY_KEY> = {
-    validate: (val) => {
+  const maxQtyValidation: RegisterOptions = {
+    validate: (valStr: string) => {
       if (!getValues(MULTI_QTY_KEY)) return true
-      if (val <= 0) {
+
+      const valNumber = parseIntElseNull(valStr)
+      if (!valNumber || valNumber <= 0) {
         return 'Enter a value greater than 0'
       }
 
       const amount = dollarsToCents(getValues(DISPLAY_AMOUNT_KEY) ?? '')
 
-      if (val * amount > maxPaymentAmountCents) {
+      if (valNumber * amount > maxPaymentAmountCents) {
         const maxQty = Math.floor(maxPaymentAmountCents / amount)
         if (maxQty <= 0) {
           return `Quantity limit could not be set because amount is above S${formatCurrency(
@@ -155,7 +170,11 @@ export const ProductModal = ({
         }
         return `The maximum quantity for this amount is ${maxQty}`
       }
-      if (val < getValues(MIN_QTY_KEY)) {
+      const minNumber =
+        parseIntElseNull(getValues(MIN_QTY_KEY) as unknown as string) ||
+        Number.MIN_SAFE_INTEGER
+
+      if (valNumber < minNumber) {
         return 'Enter a value greater than the minimum quantity'
       }
       return true
diff --git a/package-lock.json b/package-lock.json
index a4366ebfaf..2948edf654 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "FormSG",
-  "version": "6.76.0",
+  "version": "6.76.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "FormSG",
-      "version": "6.76.0",
+      "version": "6.76.1",
       "hasInstallScript": true,
       "dependencies": {
         "@aws-sdk/client-cloudwatch-logs": "^3.347.1",
diff --git a/package.json b/package.json
index d01e7e62c4..6b2ef28274 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "FormSG",
   "description": "Form Manager for Government",
-  "version": "6.76.0",
+  "version": "6.76.1",
   "homepage": "https://form.gov.sg",
   "authors": [
     "FormSG <formsg@data.gov.sg>"