I cannot tack the wifi option; pressing Ok just starts the wifi. But after some minutes the wifi of the camera stops. Because it is not tacked to stay on? But I cannot tack it.

I can not enable the wifi to run longer than a few minutes. Pressing in the settings menu the wifi tack-square just starts wifi, but only for a few minutes. With the VDX app all is fine for the moment. But that app has some weird things. Reinstalling the app works,  sometimes… There is no sane pc app, because all require an usb-camera.  My Vision 3 has a fine 3-choices menu after connect to pc via usb so that works. But wifi: I can ping 192.168.100.197 but that is all. FTP, Telnet: no way.   Anyone has a advice/solution?