I have been trying to play with some friends on one of their realms servers recently. They sent me an invite to the realm, (which gone by now since it was almost a month ago,) and when i went to accept it, it didn't allow me to. I had the pending invite but I couldn't accept it or even reject it.

When i later on tried to look in to the problem i found that none of the buttons in my realms menu worked. I couldn't leave an old realm and i couldn't renew or configure my own expired realm.
I have tried to reinstall Minecraft multiple times, and the problem is still there.
NOTHING WORKS AT ALL!
I've asked some friends and none of them have the same problem

I have no idea what caused this to happen or how you would recreate it.

I live in Sweden if that's anything useful to know.
IGN: ollmol

Screenshot:
Renew, Configure and Leave button is broken. As well as the ACCEPT and REJECT buttons for invite