The camera should work—and by that I mean record to and playback from local microSD storage—even without a subscription, which I think is a major selling point, but, unfortunately, your experience is not uncommon.
What do you mean by “all the troubleshooting”? If you can provide specific information about steps you’ve taken and how you’re trying to use the camera (i.e., what and where you’re tapping in the app, what specific error messages you’re seeing, etc.), then that might provide guidance for an answer or work-around, but I wonder if you’re experiencing something related to a longstanding issue with Cam Pan v3 that’s been discussed in several topics, like this one:
If that’s the case, then we’re probably stuck with work-arounds and waiting on a real fix from Wyze, like what seemed to happen with Cam v3 last year.
I’ve been dealing with this issue on one of my Cam Pan v3s (which doesn’t even show the vertical green stripe on the microSD recording timeline despite the fact that the card has no problems when I put it in a Cam v4), and I’ve ordered some new cards to do more testing, so I hope to do some of my own troubleshooting within the week.
Welcome to the Forum, @Hunter! 