Pretty sure this is a rebranded Philio (their models start PH-) , and if so the problem is that these models use the notification class 4 to send the motion notifications, and smartthings doesn’t support that (it’s still on v three). I know some people have been able to reconfigure the Philio to not use that command set and got it working, so I would take a look at those and ask follow ups in those threads.
You might also take a look at this one and see if it has anything you can use, which I found by using the quick browse list in the community – created wiki and looking under sensors: