System wont recognize players in sets

so i sometimes use the epic programme to build my lineup if they have a higher OVR than than base iconics. My issue is once i get my intended player and when i try to sub them out of the lineup to complete whatever set im supposed to they dont appear in any of the sets as if they dont exist at all.... I can only put them back in lineup it sucks coz i have like 4 iconic DB's just stuck as reserves which i cant put into sets to break down or obtain other rewards as i should see fit in sets. Dunno if its just me or if anyone else has something similar....

Please let me know how to fix, i tried clearing cache & even deleted app data to restart but nothing works might try deleting whole game but i doubt it will work.

O:S Android 15  on Samasung Galaxy 21FE

(latest version & build)