NanoVNA V2 users group and discussion forumgroups.io/g/NanoVNAV2
This is the only official users group. Be careful and note the URL is NanoVNAV2.
On Windows, please run CypressDriverInstaller_1.exe first to install the USB-CDC driver. On Linux and MacOS, no drivers are needed. Download and run .AppImage or .dmg directly.
If using Windows 10, you may need to update your NanoVNA firmware to the latest version.