warning zone

I try to fly (very low altitude) near our local airport and I get the message as viewed in the image below. It seems like it says I can bear responsibility and unlock. But when I press "yes" and even hold it, nothing happens. On one other occasion, no longer reproducible, every time I clicked...

I think it is since last update I have very strange problems with my drone. I used to fly in the fields surrounding my home in Belgium which is not so far from an airport, but it is only class D airspace according to DJI software. In Belgium I'm allowed to fly on private property to a height of...