@amandam
Hey again, if anyone ever stumbles across this post I found the following answer:
www.wix .com/velo/forum/coding-with-velo/acount-sharing
You can get the IP of the user who is making the request, therefore you can intercept if there is an account made from the same IP and limit them to a certain amount e.g. 3. This however won’t resolve the issue if the users start using a VPN with a dynamic IP but will still prevent most of them from abusing free trials. Hope this helps someone, cheers !