Unable to subscribe to Realms (fixed now)

When trying to subscribe for Realms, I encounter this problem. It tells me that I have the “wrong account”, but I can easily buy Minecoins. When I click on the “Buy now” button for Realms, I always get the same message, “Couldn’t access platform store”. Then, when I go back, I’m stuck on the “An error has occurred” page, and the only way out is Alt+F4.
Notice: My Realms free trial phase has expired, and I cancelled it early on. Now, I can’t pay to have access to another Realm.
Also, I can easily start a free trial for the Marketplace Pass, so it can’t be an error on my side. I’ve restarted Minecraft and my PC multiple times.

Well, this was fixed now. Thanks