A few pointers on using this hugely impressive but tiny camera...
Its not immediately obvious how to open it/separate from the protective cover - which is why there are so many guides online, such as this:
The top clip needs quite a lot of force to open - it needs to be carefully checked; I've seen comments online saying its been water damaged as a result of this or other port openings not being properly closed again.
You can view a manual online:
LOTS of videos talking you through the operation of the camera: