Activation lock, disabled ID, ID no longer exists
So I’m trying to help my mother figure this out. Her old iPad is stuck on Activation Lock because she forgot the password to the account it’s tied to. Now when I tried to help find her password at iforgot.apple.com it turns out her Apple ID is “not valid.” My mother assumes this is because the email she used to make it no longer exists. Seeing there was no way to retrieve the password, she then took it upon herself to start guessing which of course, after too many attempts, resulted in the disablement of the account due to security. So now we have an iPad stuck on activation lock because the ID is disabled even though the ID isn’t technically valid/existing anymore? I’m very confused and don’t know how to go about contacting support so as to resolve this predicament.
iPad 2