Tried logging on after not having played for several weeks, and found my account was closed. Went on an alt account, filed a GM ticket, and they told me it was because of gold trafficking, but no further details were provided. Told me to post here, so here I am!
I think it was probably because of my second account, which I use as a dedicated auctioneer/disenchanter/group finder. I kept the my second account character in a main city, and used it to LFG while my main account character quested, etc. I would also trade between the two, sending gold back and forth, as well as items. I'm guessing this is why I was banned, but the GM said that's not against the rules as long as it's just for personal gameplay purposes.
So, that's my appeal, and I hope you overturn the ban. Thanks!