@necrevistonnezr It's working great. Thank you!
I know I'm going to need this when it's time to update the plugin. Make sure to remove the -master from the folder name so it's just "twofactor_gauthenticator" and use the code mentioned in the Cloudron doc page, and not the one on the plugin's github page.
array_push($config['plugins'], 'twofactor_gauthenticator');