A new build is now available on TestFlight. I tried to solve or improve some of the issues you've kindly pointed out.

The most important ones are:

• Now dark mode can be configured to show a grey background instead of black. Less optimised for battery, but much more readable. "It works for me!"
• Added the “Bookmarks” menu item, so bookmarks can now be displayed
• VoiceOver improvements - I'm not an expert, so I hope I'm doing it right
• GoToSocial - editing posts and push notifications should now be working - Notifications needed both relay and app support. Please test!