Possible theory...

[Goatmilk]

I have been botting 3 accounts all level 20+ approx 4-8 hours a day, different countries etc. switch sometimes between on the phone and computer. Still not banned.

I have never touched a gym on any of them, ever. Maybe that has something to do with it?

 

[JPG]

no, I never invaded gym and yet I ban on all accounts....
it does not matter how many hours using the boot, your account will be banned at lvl 24-25-26 most likely