Secure connection failed

Since a couple of years I'm a paying user. Since this morning a pop-up keeps showing up on my screen. I attached a screen shot of it. It's in my own language (Dutch), but it says "fails to make a secure connection with Zoom".

This never happened to me before and this pop-up is really annoying. It keeps showing up every minute. I indeed can use Zoom and actually be in meetings, but every time I have to click away this pop-up.

Can someone help me out here?