Creality ai only working the first minutes

I noticed that the ai only works for the first few minutes. when I start a new print and I put my hand in front of the camera, the bed stops going up. if I don’t do this for too long, the print continues, but if I hold my hand in front of the camera for too long, the printer stops but doesn’t go any further. I have to turn the printer off and on again and restart the print. if I take some old spaghetti from a failed print and throw it in front of the camera after the first layer, the printer doesn’t stop anymore. do more people have this problem? I turned on professional and pause print when detected.

I have switched it off as over the last few months I have not seen it catch anything. dissapointed

Yeah same problem - look at this blob Massive blob
Lucky it was only a 40 minute long print.
It took 2.5 hours to recover from this.

Yea, I noticed it also that the AI does not work at all it seems. Here is my lovely mess.