Hi @Evan_Rowley
I believe these were all converted over to Credly. If you sign up(or sign in) with the same email used at university.mongodb.com the certification can be claimed.
At least that is how I remember it working.
Here is mine that was earned on the old university platform as example, click on the verify and it shows the date issued as well as the date claimed. The date claimed was after the platform changed and I claimed it in Credly.
https://www.credly.com/badges/c2bcb8ae-c622-40e7-9e5b-c250cb9e3d72
