Unable to upload to 70MB on Firefox

I paid for the pro, but it didn't update my file size I guess, because Anything above 24MB I can't add to a post to upload.

At first I thought it was my size but after ensuring everything was between 8196x8196 I began to check my MB's, and noticed how lower ones worked, and how anything above 24MB would not work at all.

Please fix this.