Technical Issue: Matches Not Counting in Gauntlet 13 (Disconnected from UT)

I am experiencing a persistent technical issue in FC 26 Ultimate Team, specifically in the "Gauntlet 13" mode.

Every time I finish a match in this mode, I get disconnected from the Ultimate Team servers, and the match is not counted (as if I never played). However, in other modes like Division Rivals, everything works perfectly—the matches are counted, points are added, and I don't get disconnected.

My internet connection is stable and I have already tried troubleshooting (DNS, MTU, and updating squads), but the problem remains only in the Gauntlet mode.

Please look into my account as this is preventing me from completing my objectives.