What the hell is going on with FC Mobile?

I can’t figure out today’s new event (UEFA) — I totally don’t understand how it works.

In Versus Mode, my Starting XI shows as OVR 117, but when the match starts, the squad on the pitch is actually my 104 OVR backup lineup. It keeps happening in multiple matches. The 104 lineup has even disappeared from my Squad Selection, but it still shows up in-game…