Seems it really wants to stay in beta mode. Sorry about that.
The work around to that is to force it back to release mode.
First uninstall to make sure you don’t have the beta launcher.
Then with regedit navigate to Computer\HKEY_CURRENT_USER\Software\CCP\EVE and change the key “LauncherType” to 0
Then install the latest launcher from the site and you should be in release mode.