Changing my email address!

Hello. I have a free account with quite a lot of teaching prezis saved (University Lecturer). It’s driving me mad that I’ve tried multiple times and cannot seem to change the email account associated with my account. I signed up with my student email many years ago which will expire soon. Every time I try to change to my current (staff) email, I get an email with a link to confirm the change and every time when I click the link it says the link has expired.

I’m concerned I will soon lose access to my teaching prezis and cannot get any account support as a free user.

This looks like a serious problem, I hope you’ll get your answer by the beloved Prezi staff.