After Effects not opening - really really need it to open

I recently updated my laptop to MacOS Tahoe and at the start AfterEffects was working fine until it crashed. Now every time I try to launch it I just get this message:

No matter what I do, it will not open. I have tried everything I can find on the internet on forums suggested such as this one: 

It will not open in save mode. I have tried changing permissions, read/write settings, uninstalling and reinstalling etc. 

I was on the phone to Adobe Help for over an hour where the man tried everything he could think of to get it to work on this account. Eventually he made a separate test user account and it launched on that and he then told me it was a problem with Apple and I had to contact them. I then contacted Apple who have no idea how to fix the issue and told me it is an issue with Adobe. 

I REALLY need AfterEffects to work on my computer, on my own account as this is where all my files are and I use it for work.

I don’t understand why free apps such as Blender and Cavalry work seamlessly but the one I am paying  for won’t even open. 

This is my THIRD day spending trying to fix this issue, so I can have AfterEffects open on my own laptop. 

Any suggestions on how to fix this!? As I really need it to work.