@Supurderek 

Hi, welcome to the community.

I see you have contacted our technical support via live chat already and after checking the troubleshooting record, I see the main Deco X20 is online from the cloud server now.

But it hasn’t been bound to your TP-Link email ID.

So I wonder have you ever changed the password of your TP-Link ID in the previous troubleshooting process?

--if yes, it is suggested you could change the APP password back to be the same password as the web management page.

And If they are already the same, please restart the cable modem and main Deco once.

Thank you and wait for your update.