Adoption tool DOES NOT TRASFER THE MEMBERSHIP. I don't mind relogging the finds, but I don't want to pay once more.
I might just duplicate my account for a year, and then pay for the new ID one.
But I think I'll just try writting support and asking them.
Feel free to write to Contact@ and ask them about changing your user name. Here is the standard response.
Depending on who responds to your email you will get that exact response or the other version that says the same thing with different words. They can help with the membership transfer. But user name changes are not possible.