Yeah I have the same exact issue, for almost a week now.
in my second Solo Battle game I played today, none of my abilities or x-factors were active. my opponent's didn't work either. it's getting worse and worse and worse... ☹️
EDIT: 3rd Solo Battle game in a row without any x-factors or abilities.
@SOMOGYIUR@satfreaktom264 after facing 3 Solo Battle games in a row (2 yesterday and 1 today) I tried to delete the Origin cache wondering whether the corrupted pre-game loading process was related to something saved in the cache. interestingly, in my 2nd Solo Battle game that I've played today (after deleting the cache folder) the abilities and x-factors seemed to work correctly.
maybe it is worth a try for you too?
to delete the cache, I followed the steps described here: https://help.ea.com/en/help/faq/clear-cache-to-fix-problems-with-your-games/ (also available in German @satfreaktom264)
thank you, i will try it after work and I'll let you know what happened!
EDIT: I cleared the cache, restarted origin and my pc, and still nothing... ☹️
about 8-10 games later, playing a Solo Challenge from the new Team Affinity series, all x-factors and abilities are gone again... ☹️
so, either the cache is corrupted again (but I did not face a crash or disconnect), or it does not have anything to do with the cace and I was just lucky not to face this bug in some of the Solo Battle games...
