Could be a recording schedule issue, where you have IVS setup for a certain time and SMD for a certain time. Your screenshot of the 12th only shows PM SMD alarms.
Agree with bigredfish.
I have the 7 series but an I2. But have fitted a few I3 versions.
Fairly sure you cannot have AI IVS and SMD running at the same time. Indeed motion/SMD need to be enabled together and obviously the motion recording schedule setup correctly.
I really cannot believe that the camera only has H265.
I would highly recommend the basics and taking the camera back to factory defaults. H264 as a minimum encode, should be available! Unless you have some fake weird camera and it's 4 MP upscale only works on H265 with awful bitrate levels...
Just a shot in the dark!
If your using the hard wired ethernet connection simultaneously as well as the WiFi on the camera. I'm guessing the WiFi will be disabled? Try disconnecting the ethernet, reboot camera and see if you can login to the static IP WiFi address of the camera.
Indeed try H264.
H265 is not a efficient standard, apart from saving storage. It's compatibility alongside the not so smart + codec is likely to cause the issues you have experienced.
I would personally advise to use H264 and definitely not the so smart "+" codec on.
Also crank the bitrate up as much as possible via constant not variable.
You should be able to have one IVS rule for a tripwire and another rule for intrusions. So rule 1 is a tripwire and rule 2/3 intrusion, or similar configuration. Then subscribe to your required push notification.
Crazy that you have to complain about a service or product because of no assistance from a manufacturer/seller. Then post on a separate internet site for assistance for warranty.
Hopefully all works out for you.
Can I ask when the remote access was not available please.
Another thread from a trustworthy forum contributer has suggested the P2P servers/services has a possible issue.
I'm guessing a bit!
I suspect your network settings on the new router and configurations do not match the DVR. Is the P2P still active and online via network settings on the DVR?
Have you checked that P2P is still active and "online" via network settings on NVR. Also in network settings check DNS preferred 8.8.8.8 and alternative 8.8.4.4?
My initial thoughts would be that your Home Assistant software is causing the problems described. Other software will most likely never integrate correctly.
Have you isolated the Dahua camera away from the Home Assistant demands, to see if the problems resolve?