This has been happening for years, and even if you do get to register with a VPN. You may get to use it for a couple days. But then their spam detection will disable your account and you will have to send them an email from another email provider to get it back up and running.
(Speaking from experience)
I think the only way to avoid the account getting disabled is to pay. As that is what I did, then I didn’t have any issues with creating another account.