I can't deregister an expired license, and add a new license. The problem I have is that I try to deregister but it tells me all the time to add the code. I attach images. thank you.
And It is impossible to add a new license
From your screenshot, I can see that you have pirated version of Betheme installed.
You need to download a fresh package from ThemeForest, replace the current one with a new one, and then you will be able to register your license key properly.
I didn't know about that. i will try it. thank you