3 answers
Hope you are doing well.
I am from the Trailhead help team. We tried checking this from our end in the backend and see that you have successfully completed 'Salesforce Platform Basics' Trailhead.
May I request you please let us know if any of the above responses helped you resolve the issue? If yes, kindly share the solution that helped you resolve the issue so that it might help the fellow Trailblazer's who are facing the similar issue.
Thank you!
Nagendra Babu Pilli
Trailblazer Help