diff -u b/js/commerce_authnet.accept.form.js b/js/commerce_authnet.accept.form.js
--- b/js/commerce_authnet.accept.form.js
+++ b/js/commerce_authnet.accept.form.js
@@ -89,7 +89,7 @@
                       case "NOACTION":
                         // Success indicates that we got back CCA values we can pass to the gateway
                         // No action indicates that everything worked, but there is no CCA values to worry about, so we can move on with the transaction
-                        console.warn('The transaction was completed with no errors', data.Payment.ExtendedData);
+                        console.warn('The transaction was completed with no errors.', data.Payment.ExtendedData);
 
                         responseJwt = jwt;
                         // CCA Succesful, now complete the transaction with Authorize.Net
@@ -98,30 +98,43 @@
 
                       case "FAILURE":
                         // Failure indicates the authentication attempt failed
-                        console.warn('The authentication attempt failed', data.Payment);
+                        console.warn('The authentication attempt failed.', data.Payment);
+                        alert('The authentication attempt failed.')
+                        location.reload();
                         break;
 
                       case "ERROR":
                       default:
                         // Error indicates that a problem was encountered at some point in the transaction
-                        console.warn('An issue occurred with the transaction', data.Payment);
+                        console.warn('An issue occurred with the transaction.', data.Payment);
+                        alert('An issue occurred with the transaction.')
+                        location.reload();
                         break;
                     }
                   }
                   else {
-                    console.error("Failure while attempting to verify JWT signature: ", data)
+                    console.error("Failure while attempting to verify JWT signature: ", data);
+                    alert('Failure while attempting to verify JWT signature.');
+                    location.reload();
                   }
                 }
                 else {
                   console.error('Response data was incorrectly formatted: ', responseData);
+                  alert('Response data was incorrectly formatted.');
+                  location.reload();
                 }
               })
               .fail(function (xhr, ajaxError) {
-                console.log('Connection failure:', ajaxError)
+                console.log('Connection failure:', ajaxError);
+                alert('Connection failure.');
+                location.reload();
               });
 
           } catch (validateError) {
-            console.error('Failed while processing validate', validateError);
+            console.error('Failed while processing validate.', validateError);
+            alert('Failed while processing validate.');
+            location.reload();
+            
           }
         });
 
diff -u b/src/Plugin/Commerce/PaymentGateway/AcceptJs.php b/src/Plugin/Commerce/PaymentGateway/AcceptJs.php
--- b/src/Plugin/Commerce/PaymentGateway/AcceptJs.php
+++ b/src/Plugin/Commerce/PaymentGateway/AcceptJs.php
@@ -376,7 +376,7 @@
     // We don't want 3DS on the user payment method form.
     if (!empty($this->getConfiguration()['cca_status']) && !empty($payment_details['cca_jwt_token'])) {
       if (empty($payment_details['cca_jwt_response_token'])) {
-        throw new \InvalidArgumentException(sprintf('Cannot continue when CCA is enabled but not used.'));
+        throw new PaymentGatewayException('Cannot continue when CCA is enabled but not used.');
       }
 
       /** @var \Lcobucci\JWT\Token $token */
@@ -384,9 +384,16 @@
       $signer = new Sha256();
 
       if (!$token->verify($signer, $this->getCcaApiKey())) {
-        throw new \InvalidArgumentException(sprintf('Response CCA JWT is not valid.'));
+        throw new PaymentGatewayException('Response CCA JWT is not valid.');
+      }
+      $claims = $token->getClaims();
+      /** @var \Lcobucci\JWT\Claim $payload */
+      $payload = $claims['Payload'];
+      if (isset($payload->getValue()->Payment->ExtendedData->SignatureVerification) && $payload->getValue()->Payment->ExtendedData->SignatureVerification === 'N') {
+        throw new PaymentGatewayException('Unsuccessful signature verification.');
       }
     }
+
     $required_keys = [
       'data_descriptor', 'data_value',
     ];
@@ -406,14 +413,13 @@
 
     $payment_method->save();
     if (!empty($this->getConfiguration()['cca_status']) && !empty($payment_details['cca_jwt_token'])) {
-      $claims = $token->getClaims();
-      /** @var \Lcobucci\JWT\Claim $payload */
-      $payload = $claims['Payload'];
       // We might not have a CAVV value.
       // @see https://usa.visa.com/dam/VCOM/download/merchants/verified-by-visa-acquirer-merchant-implementation-guide.pdf
       // Table 5-2.
       if (isset($payload->getValue()->Payment->ExtendedData->CAVV)) {
         $_SESSION['commerce_authnet'][$payment_method->id()]['cavv'] = $payload->getValue()->Payment->ExtendedData->CAVV;
+      }
+      if (isset($payload->getValue()->Payment->ExtendedData->ECIFlag)) {
         $_SESSION['commerce_authnet'][$payment_method->id()]['eci'] = $payload->getValue()->Payment->ExtendedData->ECIFlag;
       }
     }
diff -u b/src/PluginForm/AcceptJsAddForm.php b/src/PluginForm/AcceptJsAddForm.php
--- b/src/PluginForm/AcceptJsAddForm.php
+++ b/src/PluginForm/AcceptJsAddForm.php
@@ -184,7 +184,7 @@
           ],
         ];
         $element['#attached']['drupalSettings']['commerceAuthorizeNet']['orderId'] = $order->id();
-        $element['#attached']['drupalSettings']['commerceAuthorizeNet']['orderAmount'] = $order->getTotalPrice()->getNumber();
+        $element['#attached']['drupalSettings']['commerceAuthorizeNet']['orderAmount'] = round($order->getTotalPrice()->getNumber());
         $element['#attached']['drupalSettings']['commerceAuthorizeNet']['orderCurrency'] = $order->getTotalPrice()->getCurrencyCode();
         $element['#attached']['drupalSettings']['commerceAuthorizeNet']['ccaStatus'] = 1;
       }