I have purchased one theme from theme forest two year back and used it in my website. Now, I am asking to readd purchase code. When I try to add purchase code, it gives me error that this code has been used on another website (my staging version of this site). So I visited my staging site and removed theme from there.
Now again I tried to add purchase code and still it is giving me the same error.
In this case, because both the staging and production websites are considered to be part of the same end product, you should be able to reuse the purchase code. Please reach out to the theme’s author, as they will need to resolve this for you.