ip address ban (Suspicious Activity - RB)

I could not create a ticket on my banned account, it refuses to create a ticket:

"Support is unavailable due to an IP Ban that exists on this account."
"The reason for the ban is Suspicious Activity - RB."

I have several accounts on warmane. today I tried to login into one of them:
but says:
"Your IP Address (---------------------) has been suspended for due to Suspicious Activity - RB"
I rarely play on that account because my mains are on other accounts so what is the reason for ban?
And how to contact a GM to provide account information?
I wasn't hacking or doing anything to avoid the game rules.