Did you Unjailbreak your device and tried Non-JB method ?
Tried restoring rootfa (which is the method to unajilbreak) with unc0ver 5.2.0 and still got ban 10 min maybe is because for full unjailbreak a restore is needed since some files might stay.
But doing restore will loose my ability to do jailbreak since iOS might update or its just me getting ban also could be
goto setting>general>Reset> Erased All data
you will remain on same ios
already tried restore and for sure know my phone is 100% free of jailbreak since my banking apps do work know, still getting 10 min bans with non jailbreak hack.
So far have tested this with a friend, both of us use uncover, he has iOS 13.4.1 and i have 13.5, he just unjailbreaked with uncover, installed non jb hack, can play with no bans with 6 matches played with no issues (really good fact here to mention he didnt do a restore and still hasnt been banned)
I did same with uncover and iOS 13.5, banned 10 min first match with 12 kills and 8 left, went beyond and unjailbreaked and restored with itunes, getting same ban, it could be ios related or uncover as i dont know if he has same version or the fact i use ipad also as he uses iphone