Notifications not working on one camera

I’ve got two 3rd generation stick up cams. A few weeks ago, I stopped receiving notifications from one of them. I have a few schedules so deleted them and set them up again but still nothing. Motion alerts are turned off when I look at the camera and look slightly greyed out (see picture) If I try to turn them on, a message pops up asking me to turn off my motion schedule (even if I have none set up or have them turned off) and then the slider goes back to the off position.I’ve tried deleting the app, deleting the camera and setting it up again, rebooting my phone, rebooting the camera, turning notifications on and off in Notification Centre (iPhone) and still nothing. Run out of ideas really.Any help greatly appreciated.