WTFuji wrote The person that is richtofen needs to have both the shangri la achievements and the call of the dead one

No, it doesn't necessarily have to be Richtofen that has the achievements.
Just someone in the game needs the achievements.

it sounds more like a connection problem cause i had that problem and we just changed hosts and it worked soo try that if not just look it up on youtube or google im sure the answer is on there