I am unable to link my AWS account to AWS cloud institute

Ensure You're Using the Root User Account: Make sure you're signing in with the root user account of your AWS account when attempting to link it to AWS Cloud Institute. This is the account that has full administrative access to your AWS resources.

If you're confident that you're signing in as the root user but still encountering issues, verify that the root user account has the necessary permissions to link the account to AWS Cloud Institute. You may need to check the IAM (Identity and Access Management) policies associated with the root user account to ensure it has the required permissions for linking. If you've verified that you're using the root user account and have the appropriate permissions but still can't link your AWS account to AWS Cloud Institute, consider reaching out to AWS Support for assistance. They can help troubleshoot the issue and provide guidance on resolving it.