I agree with Loki. it seems like more than likely it is a card issue. I want to make clear I don’t know for sure but that card states it is good for cameras, tablets and also includes home security.
-
most cards that are rated for cameras and phones wont go through the vigorous write/over writes our cameras will. the fact that this one states it is good for “home security” is interesting.
-
for our cameras you’ll want to find a card made for “endurance” recording.
I do know of some home security cameras that on top of saving to the cloud you can also save a file to an inserted sd card. but that is only done on command and not constant ( ergo it wouldn’t be a constant overwrite like our cameras) so maybe they had that type of camera in mind when they said security camera.
your best bet would probably be to try a new card. If you choose to go this route look for a card that is rated for true high endurance. these cards are made for constant over writing like a dashcam or our cameras do.
this post might help you in that decision if you choose to go with a new card. we are trying to gather information on problem prone cards and find the ones that work good.
hopefully you can find a solution to your issue, but I would start with the easiest, that being a new card.