Is My Account Flagged?

Same as https://news.ycombinator.com/item?id=32700360 months ago. If you haven't contacted the moderators via email yet do it today. (Personally I don't find the articles engaging, I mean not the kind that will spark a discussion and HN is mostly about discussing things)

No, but you keep submitting spammy stuff from sites that are banned from HN. Maybe stop doing that.

What do you do, which makes you think it might be? Make another, look in new, find your posts/comments or not, play with things & report back.