Actually, I have some good news! The spam problem is in the process of getting fixed now! ^^
If you scroll down a few posts, you'll see an old post by FelliVox related to what we are talking about. A couple of days ago, Beeant (the site admin/owner/developer/etc) replied to that post saying he's implemented a change to the website to hopefully reduce the amount of spam we get.
Here's a link to the post. Check out the comment Beeant posted:
https://japaneseclass.jp/forum/thread/1461
It already seems like we're getting less spam than usual the last couple of days. The situation is looking much better now. ^^
December 12, 2018 at 5:33am