ip camera password reset

I'm afraid the cameras I have, model SA6321, work with the More Vision app, but the app only functions in China. I can't create an account on this app, and I don't know the username and password for my cameras. What is the solution to my problem? I would greatly appreciate any help you can provide.

I have a Techvision IP camera model PBE4L3WZ - S/I/A. There doesn't seem to be much information regarding Techvision cameras but I was hoping I could do a reset by pressing the button on the camera as I plug it in and hold it for about 30 seconds, but it never resets. I also tried 45 seconds. I...