Confirming an address

[nadiakd13]

Plan

Premium

Country

Poland

Device

multiple

Operating System

iOS 11, Windows 10

My Question or Issue

Hello!

So, me and my brother decided to change our plan from Premium Duo to Premium for Family. I cancelled my previous plan today (07.11, but I will have access to it to 09.11) and my brother started the new one and invited me to it. I tried to confirm my address (we live in the same household) and I can't do it, "A problem occurred. Try again later." appeared. What could went wrong? I tried to confirm the address on multiple devices and it didn't work anyways.