also
you are never safe of a manual ban, but auto ban can trigger when you receive high amounts of currencies, especially in short span of time, also modifying damage/health, using high multiplier reward or vip
what can triggers a manual check when you are reported by other players, high level card compared to the rest of your deck, high level card with a lot waiting to be used, max out level 26 common card, huge stats and not even the 1 month medal, big difference between chest opens and arena winnings, lot of medals unlocking, not having a pet while reaching highests leagues.
For the last if you are a vip in this forum, dazzle can give you the pet, i didn't find out yet how to, likely not possible with Game Guardian or very hard.