Here is the record for my questions on this Mi Yodeya site
Yet (on the fast of Av of all times) I get this offensive message warning me that I am near to being banned because of some problems with my questions!
Wow. With that record, I would be unpleasantly surprised to get this message, too.
It's important to note that this message was triggered by an automatic process, not by a person. So, it's not that someone's coming after you on the Fast of Av. Also, apparently, there's a significant margin between this message and an actual question ban.
Here is the big, official writeup from Stack Exchange, the company that hosts Mi Yodeya, explaining as much as they can about the function of these bans (which you haven't reached yet). Have you deleted or had deleted a bunch of posts recently?
I'm sorry you're seeing this, and I hope it goes away soon. If you would like advice on improving a specific post, which would certainly help, please ask here or in our chat room; I'm sure people will be happy to help.
That is very odd. You have one deleted question (score 0, closed and later deleted by the automatic cleanup script), and one other closed question that you might be able to rework into an on-topic one. You have no downvoted questions at the time I'm writing this.
I see you've asked two question since taking that screen shot; did you get this warning for both of them?