new MBP M1 asks for Activation Key

Probably answered a hundred times but I cannot find it for some reason.

I have a new MBP M1 , I migrated my iMac to my new MBP and when I open Resolve it asks for an Activation Key.
I have the Resolve studio working on my previous iMac, where I migrated from, but somehow I don't understand what to do next to get it to work on the new one, since its asking for a Activation key. I wouldn't know whether I could still find that somewhere.

Can you please help.

You'll need to reactivate Resolve. If you don't have the key you're out of luck.