Me and buddy can't group?

When me and my buddy try and invite each other to group up it says LE-94 Failed to fetch party data, we have tried logging out and back in tried swapping to offline character then back to online 1.1 cycle character we both in normal mode and didn’t select solo mode but when we bring up friend list it shows each other as offline and again when we try and invite each other get error listed above. Any suggestion on how to fix this?