Hi
As we’ve just indicated in our email we can’t really help you without knowing what the problem is exactly.
Is the editor freezing, not freezing, crashing?
any crash log or editor log to see what the error is?
If it’s only on a specific project, the error might be linked to an asset in that project.
We’re willing to help you out but we need a bit more detail to work with.
As we indicated in the email, if you still want a refund please contact the marketplace support (see the marketplace faq page) to process the refund request.
Thanks!