Both urls work fine in the browser, but in domoticz I only get a broken link symbol.
I can paste the link of the "broken link" symbol in the browser and it loads the snapshot...

That doesnt work either.
When I use the url in this form, I get an image in the preview, but in domoticz I only get a black frame.
/axis-cgi/jpg/image.cgi?usr=root&pwd=pass

I have the exact same issue with my axis camera. Tried everything but it never works.

You could create a virtual switch for closing the curtains instead.
Use a blockly event to check the status of the curtains when you trigger the virtual switch.

I updated to the latest version, but now I can't access the server anymore.
I also did a fresh install, but still no luck. There are no errors shown.
Any way to figure out what the problem is?