Account update failed

Hello, since the support rejected my question I come here to have answers.
I’m a student and I need to share my prototypes for anyone (public) to conduct tests.
This function isn’t free anymore and you need to have a pro account. Since I was using my personal account, I requested a student access and send all the files needed. I received a mail to confirm my account was now registered as a student one but nope.
My account (with the right mail) is still a starter one. Why??
I absolutely need to share my prototype freely this is for my final exam…