I honestly don’t know why you are getting repetitive pop-ups (but according to your images they are all different), it sounds more like some form of corruption in the program.

I have seen one of them about getting AIS for free, but only once. Me I don’t get excited about them I have the auto update notification pop-up dialled down to 1 second duration (as it also has audio notice of update) and it is this pop-up that these are piggybacked to. So I just let then pop back down again after a second.