So i was out of my house for 2 hours and i came back and like 10 mins after i get home i get a auto-clicker warning.. When i haven't been on pt or even near my computer for literally 2 hours, Anytime i email it says they applied it correctly when they clearly haven't

I cannot download anything on my chrome book let alone a auto clicker so i'm not exactly sure on what to do here? Is this a bug or.?

(Just to say i'm not asking to get this undone here, I'm just reaching out to see if this is a bug or if there's any other reasons i could've possibly gotten this and how to deal with it)