Yes, I know, the problem is solved now. It turned out that they were downvoting my comments because I forgot to revoke some authorities to the old Steem projects like Dtube etc. I had no idea about it. My Steem account has been dead since the fork, I don´t use it. But the way Hive Watchers (that Spaminator is a part of) "communicate" is really weird. Instead of telling me what the problem was in a comment or message, they just downvoted dozens of my totally unrelated comments, making me look like a scammer or something... I might write a post about this experience so that people don´t have to go through this process of figuring things out like I just did...