Joining Warzone friends is no longer possible?

Ob
- in PlayStation
2

I have a problem in Warzone. I wanted to join my colleagues in Warzone for the party like yesterday. However, it did not work and the error message 64,83-1 Train and something with online services not available came up. I play my colleague on PS4 on the PC and we've never had lobby issues except today. Does anyone know why this is and what can be done about it? (I've already done the game to review)

Of

This is a bug of many in Warzone, try a regiment if this doesn't work one or all of them have to restart the game.

Ob

Already tried. But nothing happens