diff --git a/Services/Helper/ShopwareArticleHelper.php b/Services/Helper/ShopwareArticleHelper.php
index c510476..f4e9d92 100644
--- a/Services/Helper/ShopwareArticleHelper.php
+++ b/Services/Helper/ShopwareArticleHelper.php
@@ -145,10 +145,18 @@ public function setSimpleArticleValues(ShopwareArticle $entity, ValueArticle &$a
             $article->setLastStock(true);
         }
 
-        /** @var Price $price */
-        $price = $detail->getPrices()->filter(function (Price $price) {
-            return $price->getCustomerGroup() === $this->customerGroup;
-        })->first();
+        $prices = $detail->getPrices();
+        foreach ($prices AS $detailPrice) {
+            $group = $detailPrice->getCustomerGroup();
+            if ($group === $this->customerGroup) {
+                $price = $detailPrice;
+                break;
+            }
+        }
+        // if no price is found for the default customer group, use first found price
+        if (empty($price)) {
+            $price = $detail->getPrices()->first();
+        }
 
         $price = Helper::convertPrice($price->getPrice(), $entity->getTax()->getTax(), $netInput);
         $article->setPrice($price);
@@ -201,9 +209,18 @@ public function setVariantValues(
             $variant->setLastStock(true);
         }
 
-        $price = $detail->getPrices()->filter(function (Price $price) {
-            return $price->getCustomerGroup() === $this->customerGroup;
-        })->first();
+        $prices = $detail->getPrices();
+        foreach ($prices AS $detailPrice) {
+            $group = $detailPrice->getCustomerGroup();
+            if ($group === $this->customerGroup) {
+                $price = $detailPrice;
+                break;
+            }
+        }
+        // if no price is found for the default customer group, use first found price
+        if (empty($price)) {
+            $price = $detail->getPrices()->first();
+        }
 
         $options = [];
 
@@ -1018,7 +1035,7 @@ public function getUnexportedArticles($force = false, $exportAll = true)
         if ( ! $force) {
             $articles =
                 $articles->andWhere("(attributes.afterbuyId IS NULL OR attributes.afterbuyId = '') OR articles.changed >= :lastExport")
-                    ->setParameters(array('lastExport' => $lastExport));
+                    ->setParameter('lastExport',$lastExport);
         }
 
         $articles = $articles->getQuery()
@@ -1440,7 +1457,8 @@ private function associateVariantImage(
                     ->from(ImageRule::class, 'rule')
                     ->where('rule.mappingId = :mapping')
                     ->andWhere('rule.optionId = :option')
-                    ->setParameters(array('mapping' => $imageMapping->getId(), 'option' => $option->getId()))
+                    ->setParameter('mapping', $imageMapping->getId())
+                    ->setParameter('option', $option->getId())
                     ->setMaxResults(1)
                     ->getQuery();
 
diff --git a/Services/Helper/ShopwareOrderHelper.php b/Services/Helper/ShopwareOrderHelper.php
index bc0e0cc..5289439 100644
--- a/Services/Helper/ShopwareOrderHelper.php
+++ b/Services/Helper/ShopwareOrderHelper.php
@@ -385,7 +385,7 @@ public function getUnexportedOrders(array $config)
             $minOrderDate = new DateTime($config["minOrderDate"]);
 
             $query->andWhere('orders.orderTime > :minOrderDate')
-                ->setParameters(array('minOrderDate' => $minOrderDate));
+                ->setParameter('minOrderDate', $minOrderDate);
         }
 
         $orders = $query
@@ -433,7 +433,7 @@ public function getNewFullfilledOrders()
             ->having('history.changeDate  >= :lastExport')
             ->andHaving('history.paymentStatusId = 12')
             ->andHaving('history.orderStatusId = 2 OR history.orderStatusId = 7')
-            ->setParameters(array('lastExport' => $lastExport))
+            ->setParameter('lastExport', $lastExport)
             ->getQuery()
             ->setMaxResults(145)
             ->getResult();
@@ -722,7 +722,7 @@ public function getPaymentStates()
             ->select('states')
             ->from(OrderStatus::class, 'states', 'states.name')
             ->where('states.group = :group')
-            ->setParameters(array('group' => 'payment'))
+            ->setParameter('group', 'payment')
             ->getQuery()
             ->getResult();
 
@@ -738,7 +738,7 @@ public function getShippingStates()
             ->select('states')
             ->from(OrderStatus::class, 'states', 'states.name')
             ->where('states.group = :group')
-            ->setParameters(array('group' => 'state'))
+            ->setParameter('group', 'state')
             ->getQuery()
             ->getResult();