They usually reply within a few hours.
In my humble opinion, I'm not sure, I haven't seen enough data, yet.
If you are serious about getting in touch with lexypanterra, I would shoot my shot over there.
They look at the their recent activity and how many pictures and videos they posted.
First of all, I would like to note, that this is an article based purely on data, not personal experience with lexypanterra's OnlyFans.