Hi Hannah,
Thank you for contacting the Microsoft Community.
I understand that you're experiencing difficulties with registering for the AI-900 exam and creating an account. I am very much aware of the assistance you need as I know that you have already made several attempts to resolve the issue on your own and hit a dead end despite your efforts. I'm here to take immediate action to assist you accordingly.
Please be advised, if you are a Full-Time Microsoft Employee, please know that you need to first contact the Ask Learning Support Team as they are the experts when it comes to handling concerns raised by Full-time employee of Microsoft, especially regarding FTE discounts.
To ensure that I have you covered, I have provided their direct contact information through the private message that I initiated.
As my goal is to ensure that I will be able to assist you properly, please let me know if additional assistance is needed.
If this solves your problem, please indicate “Yes” to the question and the thread will automatically be closed and locked. In case we do not receive a response, the thread will be closed and locked after one business day. Please be advised that after the case is locked, we will no longer be able to respond. If the resolution provided did not resolve the issue, please post a new question.
Best Regards,