@SpongeBobMeBoi46
It seem you have figured it out, but let me give you an reply as well:
As a non Blank Flank you should be able to edit your posts without any time limit.
As a Blank Flank this is different. Many permissions are locked for Blank Flanks.
If you check again, you should be able to edit all of your posts (since you are not a Blank Flank anymore)
Also this is more a question/problem and not a feedback therefore Im going to move this topic to the correct forum https://mlpforums.com/forum/63-site-questions/
Astralshy's post in How long can you edit posts for was marked as the answer