Axios
Change it to the UV-82WP and got the same error. My port options are what is shown, custom, and help me. I tried help me, it says to unplug the cable then plug it back in then it does nothing. No errors, it just literally never does anything except gray the box out and I have to cancel.
Radio is on GMRS1 NOAA11. I'm also using the appimage. I do also have the flatpak installed, it gives the same error.