Issues with the activation of my Programm

After I did a reset on my PC due to some issues I had, the programm accidentally deleted itself.
So I reinstalled it like before and did the exact same things with the reactivation process as I did
it before. I entered the new E-Licenser Name and added my Licenses. However it says that the license had been used before and that I need a knew activation code to start it. So now I don’t know what to do and I tried everything to fix the Problem but nothing helped.
If someone of you folks knows how to fix that kind of problem pleas let me know I would appreciate any help.

I assume Cubase is the program you are referring to.

Without knowing what version (10.5, 11, 12) you are using and if it is Pro, Artist, etc. folks really can’t offer you much useful advice.