As the title suggests.
Perma ban them, not only seller, buyer too.
Not only the account that bot/hack/cheats. but every single account uses the same IP address too.
"A kingdom ruled by fear is a kingdom not worth ruling "
A kingdom ruled by willful blindness is not a kingdom worth living.
at this point, I would suggest them to hand Lost Ark to another publisher or at least ask others that have experience on publishing KMMO in western regions to assist them with those problems. but welp, seems like I should’ve not put my trust in AGS at all xd