Gumroad account suspended (Patreon)

I log in to my gumroad account and found out it suspended by gumroad.

Without any explanation through email or message. All the earning so far is become zero too. Although I know the reason might be due to selling R18 drawing stuff, but just close my account without any warning first seem rude. Or is because of other reason? I don't know because they are not explaining. The funny thing is I not even able to find any 'contact' section in gumroad website to asking question. Oh well, that a very short experience in trying gumroad, but I guess it won't be my option to use as selling my drawing anymore.