account ban after dc

[loses]

hi gm
my cha horde rogue: loses
im a chinese and i use vpn to logon
my account got frozen for some reason after dc yesterday.and i was palying on av bg.
i was killing ppl in bg.got sudden dc.
i thought it might be some problem cause by vpn
then i ask some guildies try to log on my acocunt on a different country .the same result
i dont even know whats going on until one friend told me to log on https://en.nostalrius.org/login
they will tell u if u got banned orr not and why do u get ban
and after i login on this page.everything is fine .it doesnt say u r baned.
so this is so weird
plz let me know why did i get banned?
plz

[Viper]

Greetings,

You AFK multiple time in BG, even after warning.
Feel free to create a new account.

Best regards.