My brother got a suspended account

Hey STAFF
Im here to create a ticket to my brother because he created one yesterday and he got account unbanned because he dont do nothing.
My brother GrandHustel got unfairly banned the reason is "Ninja in Raid" and today he dont do raids without our guild, and he aren´t the Raid Leader.
Yesterday my brother doing a TOC10 with our guild and he got a suspended account in first boss. He create a ticket to understand why he got a ban, and STAFF today remove suspended account, baucause he dont do nothing .
Now he's leveling a char with me and he got a account suspensed one more time, now the reason is Ninja in Raid. Today he do one Raid with our guild "TOC10HC" and he only get one item (rolled 30) and he's the unique player rolled it.
He really want to understand why he are getting account suspended..
what Im doing to have this
Thank you for support.
Grandhustel and Navalhax lengths.
"Together for a better society"