Can't connect to iCloud

Hello,

So I have an apple ID (the same I used to join the Aplle Support Communities) that I usually use to buy stuff on the App Store, but whenever I try to use that ID to use iCloud wether it is on my iphone settings or directly via the website iCloud.com I get an error that stops me from logging in.

When I'm on the iPhone it says that either the ID or the password is wrong even though its the same that use on the App Store, when I'm on the website it says that it's a network error. I don't know what to do..