Unknown email address

I have just setup 2.20 on my clean machine and accidently selecting the zip file the licence was in for the licence, now on each startup it asks for my email address at which point it then tells me 'Unknown email address. Do you want to enter another address?' - at which point it just sits in the same loop regardless of what entered until I click no then it closes

Any ideas on how to fix, tried uninstall/reinstall but same loop.