Registration codes not being accepted on new computer??

[Nekodar]

You do not have to input the code again... Close the window that asks for registration code if there is no skip...
Take screenshots of what you see if you need more help...

You can't "release" the code from the old computer as the code is registered to your account, not to your computer.

[einwol]

my launcher is upto date: 4.22

[Nekodar]

On the first screen, do you click next or one of the two options?

Have you tried just closing the window? (click X in upper right corner)

[einwol]

It's pretty straightforward. Ill just give SE a call in the morning...