NGLSync Troubleshooting Troubleshooting Sometimes problems can occur when signing in to your MindTap for K–12 courses through NGLSync. MindTap for K–12 is Not RespondingIf MindTap for K–12 is not responding or working correctly, you can check its status at techcheck.cengage.com. Students Asked for PaymentYour K–12 school district has purchased access to MindTap for K–12 for its students, but when you create an account and sign in at the main Cengage home page, you are told your trial access will expire and asked for payment.