NGLSync Troubleshooting and Support Sometimes problems can occur when managing your MindTap courses through NGLSync. Google Classroom TroubleshootingSometimes problems can occur when syncing your course with Google Classroom. Students Asked for PaymentYour K-12 school district has purchased access to MindTap for its students, but when students create accounts and sign in at the main Cengage home page, they are told their trial access will expire and asked for payment. School Not ShownWhen you click Begin Registration, your school is not listed. Students Not in MindTap GradebookIf your school uses Cengage bulk rostering services, students are not listed in the MindTap gradebook until they access their MindTap course. Student ID Number Already UsedWhen you try to create a student account, you are told the student's number is already in use. If the student tries to create their own account, they are told they already have an account.