Similar issue here (I'm on xbox one) can't claim any campaign rewards even though it says they are available, the actual "claim" button is greyed out. Same is true for The Force Is With You achievement in arcade. On another note, I find I'm unable to upgrade certain star cards despite having met all the requirements. It doesn't seem to be a problem with all cards or classes only some. I feel these issues may be in some way related as the "upgrade" button is greyed despite having all the prerequisite boxes checked, just like the "claim" button is greyed out despite the achievement being completed. I've tried resetting my game, doing a full shut down of my console, and even resetting my storage cache all to no avail. Hope this problem gets solved soon, super frustrating.
