itunes 12.6.3 - Can´t login to my account after itunes version downgrade
So i just downgraded itunes to version 12.6.3 from the latest one (which was a real pain in the a..s), it involved manually deleting certain files etc. It seems Apple don´t want you to use anything other than the latest version, just like with their iOS operating system. So it seems you can´t just delete itunes the normal way.
Now when i try to login to my itunes account / Apple account on itunes 12.6.3 it says in red writing that;
"couldn´t finish the request, try again"
(Not the exact words i guess since i´m translating from another language).
As far as i have seen its only in itunes that i can´t login to my account, not in other places?
So what can be the cause of this, and more importantly the solution?
Is there anything which can be tried in order to solve this, or will i have to use my latest TM backup which is 2 month old?
By the way, it´s itunes on a mac computer.