diff --git a/Model/MethodListPlugin.php b/Model/MethodListPlugin.php
index ac7a93f..a7a74e1 100644
--- a/Model/MethodListPlugin.php
+++ b/Model/MethodListPlugin.php
@@ -2,11 +2,11 @@
 
 namespace tpaycom\magento2basic\Model;
 
+use Magento\Checkout\Model\Session;
 use Magento\Framework\App\Config\ScopeConfigInterface;
 use Magento\Payment\Helper\Data;
 use Magento\Payment\Model\MethodInterface;
 use Magento\Payment\Model\MethodList;
-use Magento\Quote\Api\Data\CartInterface;
 use Magento\Store\Model\ScopeInterface;
 use Magento\Store\Model\StoreManagerInterface;
 use tpaycom\magento2basic\Api\TpayInterface;
@@ -31,17 +31,17 @@ class MethodListPlugin
     /** @var Tpay */
     private $tpay;
 
-    /** @var CartInterface */
-    private $cartInterface;
+    /** @var Session */
+    private $checkoutSession;
 
-    public function __construct(Data $data, ScopeConfigInterface $scopeConfig, OnsiteChannels $onsiteChannels, StoreManagerInterface $storeManager, Tpay $tpay, CartInterface $cartInterface)
+    public function __construct(Data $data, ScopeConfigInterface $scopeConfig, OnsiteChannels $onsiteChannels, StoreManagerInterface $storeManager, Tpay $tpay, Session $checkoutSession)
     {
         $this->data = $data;
         $this->scopeConfig = $scopeConfig;
         $this->onsiteChannels = $onsiteChannels;
         $this->storeManager = $storeManager;
         $this->tpay = $tpay;
-        $this->cartInterface = $cartInterface;
+        $this->checkoutSession = $checkoutSession;
     }
 
     public function afterGetAvailableMethods(MethodList $compiled, $result)
@@ -49,7 +49,7 @@ public function afterGetAvailableMethods(MethodList $compiled, $result)
         $onsiteChannels = $this->scopeConfig->getValue(self::CONFIG_PATH, ScopeInterface::SCOPE_STORE);
         $channels = $onsiteChannels ? explode(',', $onsiteChannels) : [];
 
-        if (!$this->tpay->isAvailable($this->cartInterface)) {
+        if (!$this->tpay->isCartValid((float)$this->checkoutSession->getQuote()->getGrandTotal())) {
             return $result;
         }
 
diff --git a/Model/Tpay.php b/Model/Tpay.php
index c12805c..ca248ee 100755
--- a/Model/Tpay.php
+++ b/Model/Tpay.php
@@ -440,6 +440,22 @@ public function getClientId(): ?string
         return $this->getConfigData('client_id');
     }
 
+    public function isCartValid(?float $grandTotal = null): bool
+    {
+        $minAmount = $this->getConfigData('min_order_total');
+        $maxAmount = $this->getConfigData('max_order_total');
+
+        if ($grandTotal && ($grandTotal < $minAmount || ($maxAmount && $grandTotal > $maxAmount))) {
+            return false;
+        }
+
+        if (!$this->getMerchantId()) {
+            return false;
+        }
+
+        return !is_null($grandTotal);
+    }
+
     /** Check that the  BLIK should be available for order/quote amount */
     protected function checkBlikAmount(): bool
     {