I can’t seem to find a definition for different kinds of icons Sync uses for special users, e.g. I know how OP and my account are denoted, I have seen bot accounts marked, also I guess that I have seen a mark where a user blocked me.
Is there a place where I can check what each pictogram means and what are the possible ones?
Not sure about that part, but my guess is that its banned from its home instance, so the account basically cannot participate anywhere.