I have contacted customer support.

@Solla-topee All cameras are back in the list, same login as yesterday as its auto filled, can't see an option to do a return, bought from the tapo store UK. Done a reboot but still the same as...

@Timmyk I'm on my second camera , newer than the last one, definatly an issue with the lens

@bob-one Having just checked my account non of my cameras are now registered for warrenty purposes???? they were before.

While viewing live or recorded footage the camera has developed a thin black line in an arc shape, this is the second camera now that this as happed to, is this an issue with the senosr on this model...

@John0001 They can't have fixed it via firmware then, its unfortunate i sent mine back as i would like to have tried the new firmware. The fixed camera is fine so i'm guessing its an attempt to not...