Reply To: Gallery menu options missing after upgrading to RLG ver. 2.3.0

Yes, that’s it!
Had the same issue with this plugin (versions 2.3.0 and 2.3.1) and WP 5.6.

Please deactivate RLB, purge all your caches (if applicable) and reactivate the plugin.
All plugin settings will be preserved, the settings are accessible again and the “Gallery” entry should reappear in the admin (side) menu.