Get back my license on installed theme

Hello there,
I’m Luca, the owner of a Creative agency.
In the years I’ve purchased themes on themeforest several times!
I would like to ask you if after the end of a contract with a customer I have the possibility to get back my license for the installed theme, and to be able to use it on a new customer, or if I necessarily have to buy the theme again.

I think contract can be for support not for the license. because envato market license is one time payment. So, you should to purchase individual license for each client/website.

Ok, so I can’t get back my license on installed theme, right?

no, until you will unregister the license from the registered website and also have to remove the theme from that website. license code is unique and can be used only for one end product.

Ok, thanks for your reply!