Help! I need some help with SJCam 4000 wifi

I was lucky enough to be given this little camera by some friends but it comes with almost no instructions. I've somehow managed to accidentally "protect" a video that I certainly dont wont to protect, I am just learning by playing with it and pushing buttons. I've no idea what I pressed to protect it so I want to unprotect it and delete it but I cant. Can some one please help me?

Have you tried going to their website and downloading the manual?

cannot find the manual there and when I go to the tutorial page it just says coming soon. I gave up on trying to delete the photo, what I'm now having trouble with is transferring the photos and videos onto my computer. the Mac just does not recognise it at all. I managed to get the photos onto my old Dell computer but lost all the videos. Thankfully nothing of any value yet, just learning how to work the damn thing but it's frustrating and a bit disappointing.

Here's the manual, but it doesn't seem to be any help...