Hi Matthias,
Thank you for the details. You don’t need us to link the domain manually. Once the old domain is removed in your XTemos account, you can activate the license on your live site directly:
1) On the live site, go to Dashboard -> WoodMart -> Theme license and enter your ThemeForest purchase code. Make sure the Development domain checkbox is unchecked so it registers as a live domain.
2) If you see an “already activated” or limit message, log in to https://xtemos.com/my-account/ -> Your purchase codes, deactivate any old/staging domain there, then try activating again on the live site.
3) Your license allows one live domain plus one development/staging domain for the same project.
If you can’t access the Theme license page or the activation still fails, please share the exact error message and your live domain so we can assist further. If needed, you can find your purchase code in ThemeForest: Downloads -> WoodMart -> License certificate & purchase code.
Kind Regards