old Webpage crashed - use bought theme The7 again

I have a valid The7 Theme in my envato-account.
On my old webpage I could not “unregister” the Theme. The old page was deleted.

My question is: Can I simply use my old licence-key again?

Kind regards
M. Hadi

As you didn’t unregister from the old website then you will not be able to use the license again because each purchased Envato license will be valid for a single end product (website/domain). But you can check theme documentation or contact the theme author if you can get some help.