DuelingBook Ban Questions

[Dunkel]

I recently got banned from DuelingBook because I had to go AFK to help my father and left the computer but left for a whilte so my opponent had to wait for like an hour for judge to give me game loss. Although this is classified as Malcicious AFK, can I get unbanned since it was clearly uniintential and I definitely wanted to come back to play but was held back by father? Also how long is the ban? It just says "You are banned" with no duration unlike DuelingNetwork.