FC 26 Glitch in Team Sheets after teams edited. Can’t play in kick off!

Have the same issue, in fact had the same issue for FC 25 but it was fixed.  Can't believe I'm having the same issue in FC 26. Going to try and trouble shoot today. Deleting and reloading the squads, if that doesn't work going to delete and reinstall the game and hope the updates took care of the issue. 

Yeah totally the same issue.

I believe I have read that someone has tried to re-downloaded the game and it didn’t resolve the problem, but maybe worth a try by all means.

I just hope that the game gets updated with the issue resolved, but now in the meantime I’m just editing my teams by not going on Team Sheets and then going to create a tournament with those clubs.

Same, also can't play manager mode or make subs during a Kickoff game. 

Hey guys I think I found a workaround for the national team squad bug in exhibition mode, and it’s been working consistently for me so far. If you’re running into that issue where your custom lineup won’t save or you can’t rotate players, try this: I used chat to make it easier to understand. Hope this helps. Basically only Swap out Starters when adjusting you National Squad (haven't tested Bench yet, reserves seem to be where the bug is).

 Step by Step Fix

Start Fresh

Delete any old squad files.

Hit “Reset Squads” and download the latest EA squad update.

Test First

Before making any changes, make sure you can edit the default national team lineup and move players around. If that works, proceed.

Only Swap Starters (For Now)

The bug seems to be triggered when you replace RESERVE players with new ones from the player pool.

So, in your first edit, only swap out players in the starting XI with new national team players (those not in the original 26-man squad).

Save & Test

After updating just the starting XI with new players, save the squad.

You should now be able to play exhibition matches using your updated 26-man squad — including your added players! Important Notes:

I haven’t tested swapping bench/reserve players yet — just the starting XI.

The bug seems tied specifically to editing reserves, which may be causing the lineup reset.

EA  please fix this