My network cards name changed from p3p1 to enp12s0 during an update, which caused Mathematica to think it was unregistered and the activation key didn't work because it thinks it's still registered to another machine.
I changed the networks cards name back to p3p1 but for some reason my MathID is still not what it was before,
what other factors are used to calculate the MathID that might have also changed?