A few questions about Prolific.

I’m trying to sign up and I did a few months ago but then I was searching through my emails and I didn’t realize they sent me an invite and it expired a couple weeks ago. What can I do now? I also joined the waitlist again with a different email because I’m in the middle of changing my email on everything. Am I screwed or will they send me another invite? I really want to do this. Thank you.