Yeah I had the same experience this week, I finally completed my first zeta so now I face zetaed out squads from 9-12 in GW. I used to be able to complete it 95% of the time. now 5 straight incompletes, honestly it's better off to give up and just restart the next day than to waste hours of your life trying to face this nonsense. At least today I made it to 12 just to get annihilated by some suped up resistance squad with r2d2 that's basically impervious to any debuffs... I think yesterday on 9, I had a jyn lead with chaze, cassian, and the fifth didn't even matter cuz it was game over. So in short, keep working hard, you won't get ahead!!!