Split fiction error code 108-0

I started playing split fiction with my girlfriend and everything was working fine for the first couple times we played. I play on PC through steam and she plays on xbox. She owns the game and I use the friends pass to play with her. suddenly one day when I'm trying to join It just keeps saying "player has left the session, error code 108-0" We've tried absolutely everything to fix this over the past couple months. It's a glitch that hasn't been resolved for months now. It's ridiculous. the ONLY solution I found on the internet was to "unlink and re-link EA account, which isn't even possible for me since I did that recently and you can only do it every 6 months or something. No way to contact live support to get help. Believe me when I say i've tried EVERYTHING. The only thing I can't try is the un linking and re linking ea because I can't. It's RIDICULOUS. Does anyone know of any other fixes or how to even contact some type of support? Seeing as you can only submit a ticket for "certain" topics and the friends pass isn't involved in that so I'm just screwed, me and my gf can never play it again? Actually insane.