Yeah! New nightly working great. Deleted all freeshop-related dirs on SD, installed from QR-code in FBI. Start freeshop, input url to some titlekeys in the settings by generating and using QR-code to input the url (saves some time). Then restart app. Done.
Edit: Biggest bug now is that the game selection on top screen disappear if you change filter or anything else on the bottom screen, so you can't select any game after that. Exiting the app does not save selected filter so you can't use app reboot as workaround if you want to filter the list. I do expect some bugs in unreleased software.