Does the card (or standard SD card adapter if you are using one) have a write protect switch on it. I don’t remember ever seeing one on a uSD card, but every full size SD card that I remember has one, as do MOST (not all) micro adapters.
Not to be picky, but it’s a micro SD card. The mini SD card is about half way between the micro and standard size SD card. There were only a few devices that used them before the micro sized cards were developed - which was very quickly adopted as the common card. Every once in a while you will see an adapter for a mini card, and you can still buy the mini SD cards, but they are hard to find. Unfortunately lots of people call the micro card as “mini”.
And as was said before, check for a lock switch on the adapter you are using to read the card in your computer.
Very likely the card has reached its write limit, and it is preventing you from writing so what has been written won’t be corrupted.
Did you have it on Continuous Recording, or Record events only? If you really want continuous recording, you need to use a high endurance card; the kind that are recommended for dash cams. If you use record events only, and there isn’t something that is constantly triggering it, the flash should last significantly longer.
If you are really interested enough to watch a long set of youtube videos about a similar problem, here is a link to a youtube playlist about a write protected SD card used in a dash cam. “Write-protected MicroSD Card” posted by SteveAB4EL
TL;DR if your time is worth anything, just buy another card.
I was researching an issue where there was no playback stored. Since this Cam Pan ate an SD card last year I was ready for the issue. It turns the SD card, a PNY, was write protected. Nothing I could do would make it readable, not on Win 10 or Win XP. Replaced card with an already formatted 32G card and all is well again.
I have 3 Cam Pan’s and only this one has an appetite for SD cards so far.
Oh, BTW, the camera send plenty of events that I sometimes viewed with no problem.