Those links don't help. 

On the fifa 20 main menu. 

Go to customize 

Online settings 

Then ea account 

That will bring up all your details 

But it doesn't for me. 

It takes me to this login verification screen with this unknown email address that i dont recognise. 

Ki******@drope.nl

Either its a server issue or a hacked account? I cant even start a new account. I can not believe a company this big doesn't have a helpline instead of these silly forums.