Training: Instruction to develop new skills.
We appreciate your communication via the Microsoft Q&A forum.
Please let us know have you got a chance to see the troubleshooting steps provided by AmaranS.
Additionally, as a workaround kindly follow the steps below to resolve the issue:
1.Kindly go back to the previous unit and start the knowledge check once again.
2.Complete the knowledge check by providing answers and then click on " Check your answers" button.
3.After validating the answers, next click on "Continue" button to move to next unit.
If the information is helpful, please accept the answer by clicking the "Upvote" and "Accept Answer" on the post.
If you are still running into issues, please let us know in the comments. We are glad to help you.
Thank you.