Before attempting the test I found:
- Voyager [Issues]: Ban user from instance #1491 and
- Voyager [Issues]: Mod tools temporary ban with remove content doesn't work #1494
After doing a ban test on a new user account it succeeds (on Programming.dev anyways) although the ban function is currently only available for community-based bans as asked/detailed by SockPls on Github.
I'm currently unsure about the unlisted modlogs error, unfortunately this might be an instance related issue that you might want to test by creating a test user account
Hope this helps a bit though!🤗