diff --git a/Model/Adminhtml/Source/CustomerGroup.php b/Model/Adminhtml/Source/CustomerGroup.php
index 6dc71842346..a72a6e3faf4 100644
--- a/Model/Adminhtml/Source/CustomerGroup.php
+++ b/Model/Adminhtml/Source/CustomerGroup.php
@@ -24,6 +24,9 @@ public function toOptionArray(): array
     {
         $groups = $this->groupManagement->getLoggedInGroups();
 
+        $notLoggedInGroup = $this->groupManagement->getNotLoggedInGroup();
+        array_unshift($groups, $notLoggedInGroup);
+
         $output = [];
         foreach ($groups as $group) {
             $output[] = [
diff --git a/Service/Mollie/PointOfSaleAvailability.php b/Service/Mollie/PointOfSaleAvailability.php
index 07b6b4c6bc4..98520783746 100644
--- a/Service/Mollie/PointOfSaleAvailability.php
+++ b/Service/Mollie/PointOfSaleAvailability.php
@@ -29,18 +29,9 @@ public function __construct(
 
     public function isAvailable(CartInterface $cart): bool
     {
-        $customerId = $this->customerSession->getCustomerId();
-        if ($customerId === null) {
-            return false;
-        }
-
         $storeId = (int)$cart->getStoreId();
-        $allowedGroups = explode(',', $this->config->pointofsaleAllowedCustomerGroups($storeId));
 
-        return in_array(
-            (string)$this->customerSession->getCustomerGroupId(),
-            $allowedGroups
-        );
+        return $this->isAvailableForCustomerGroupId((int)$this->customerSession->getCustomerGroupId(), $storeId);
     }
 
     public function isAvailableForCustomerGroupId(int $customerGroupId, int $storeId): bool
diff --git a/Test/Integration/Service/Mollie/PointOfSaleAvailabilityTest.php b/Test/Integration/Service/Mollie/PointOfSaleAvailabilityTest.php
new file mode 100644
index 00000000000..666e068c21e
--- /dev/null
+++ b/Test/Integration/Service/Mollie/PointOfSaleAvailabilityTest.php
@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Mollie\Payment\Test\Integration\Service\Mollie;
+
+use Magento\Quote\Model\Quote;
+use Mollie\Payment\Service\Mollie\PointOfSaleAvailability;
+use Mollie\Payment\Test\Integration\IntegrationTestCase;
+
+class PointOfSaleAvailabilityTest extends IntegrationTestCase
+{
+    /**
+     * @magentoDataFixture Magento/Sales/_files/quote.php
+     * @return void
+     */
+    public function testDoesNotAllowAccessWhenSettingIsNotSet(): void
+    {
+        $cart = $this->objectManager->create(Quote::class);
+        $cart->load('test01', 'reserved_order_id');
+
+        /** @var \Mollie\Payment\Service\Mollie\PointOfSaleAvailability $instance */
+        $instance = $this->objectManager->get(PointOfSaleAvailability::class);
+
+        $this->assertFalse($instance->isAvailable($cart));
+    }
+
+    /**
+     * @magentoConfigFixture default_store payment/mollie_methods_pointofsale/allowed_customer_groups 0
+     * @magentoDataFixture Magento/Sales/_files/quote.php
+     * @return void
+     */
+    public function testAllowsNotLoggedInAccesWhenConfiguredProperly(): void
+    {
+        $cart = $this->objectManager->create(Quote::class);
+        $cart->load('test01', 'reserved_order_id');
+
+        /** @var \Mollie\Payment\Service\Mollie\PointOfSaleAvailability $instance */
+        $instance = $this->objectManager->get(PointOfSaleAvailability::class);
+
+        $this->assertTrue($instance->isAvailable($cart));
+    }
+}