eufyCam 2C Pro Suddenly not recording & Notifying

I have a eufyCam 2C Pro x 3 cameras with home base. I’ve noticed over past month I’ve experienced the camera all of a sudden stops recording/ detecting and notifying me. Just stops. I can log into cam and see live feed ok and do a manual recording on device. I have updated firmware etc. My 2 x other cameras work fine. If I go into app and turn the affected camera off then on again it works again. I have reformatted homebase and followed other suggestions. Any ideas? it shouldn’t do this. thanks in advance Darren
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