I have attempted multiple times to download Phantasmagoria 2 however every time I click on the installer, the game does not appear on my queue on the GOG downloader. Has anyone else gotten this problem? Any solutions?

Have you tried restarting your PC ?

Once in a while the GOG downloader hangs for no apparent reason and will just sit there not downloading. I usually hit "Pause all" if it is showing, and then "Resume all" and if that doesn't kick start it into gear, then I right click on the systray icon and choose "Exit", then restart the program at which point it always starts downloading within seconds. Hope this helps, but if not I'd recommend filing a support ticket to GOG. Take care!