Farming Facebook AD account - Insta Bans Reasons

I get some accounts working but some of them gets insta baed when creating first ad.

Create first ad - (unusual activitiy ban) then gets logged out....

log in again... make you change password... ask if my email is only one using it... ask about apps I recently used...
ask about payment methods recently added ... and then Back to login.

Anyone having similiar issues? maybe 60-80 accounts of 100 acounts I farm, I get this. But rest 20 account will work fine.

maybe its because i used mail.ru? I dont know