Hi,
You are correct, Fundamentals certifications do not expire. Perhaps your learn profile isn't linked to the correct MCID? Regardless, you need to ask your question over in the Certification forum. They have ability to fix your profile and get your certification to show up. Here is the link:
https://trainingsupport.microsoft.com/en-us/newthread?threadtype=Questions&forum=mcp
Make sure you check periodically to see if your question has been replied to--do not rely on email notification since it doesn't work sometimes. If you don't respond to them they will lock your question and you will need to start over.
Please click Accept Answer to close out this thread.
Thanks.
-TP