Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi, Kimberly Wong Cho-Yee
Welcome to the Microsoft community.
Understand that you are experiencing issues regarding your Microsoft 365 Developer Program subscription.
You can't access the new profile created, download and install the Office developer apps, or navigate to Dev Portal. I wish I could answer your question directly, but since issues related to Microsoft 365 Developer Program subscriptions require more specialized technical information to help you resolve them, there is a dedicated section in Microsoft learn (English only) for this issue. The experts there may know more about how to solve your problem.
Here is a link to the forum: Office Development - Microsoft Q&A.
You can ask for specifics and share ideas on how to solve the problem in the forum.
In the end, while I can't help you further, I hope the information I have provided will help you find a better direction.
Hopefully, your issue can be resolved after contacting the appropriate channel.
Sincerely,
Cherry.Z - MSFT | Microsoft Community Support Specialist