I want to use my theme on another site

I recently deleted my wordpress site, now I created a new one and I want to use the same wordpress theme I registered in the past one, how can I do that?

If you buy any premium theme you can download and reuse

You need to de-register it from the original site. You cannot just go ahead and reinstall it, without doing this. The process varies from theme to theme. If you have deleted the old site then you need to contact the author


Thank you