@lewisxy I have the same camera and I have configured it using the Imou app.
After configuring, I blocked internet for the camera ip in my router.
Now, I still get the video feed using ONVIF/RTSP url. But the camera keeps restarting every three minutes.
Did you face the same issue?
If not, can...
I have the Imou Cue 2-D model.
I used the ImouLife app to configure the camera. The camera is on separate VLAN.
I could access the camera using the RTSP and ONVIF url.
After setting up, I blocked the camera's internet using my router (pfsense).
Now, the camera will restart every five minutes...