Mbin does support microblogs. I believe there's a "Microblog" button in the navigation bar for desktop, and the same button found in the side drawer on mobile.
Sounds good! Migration probably won't happen today, but maybe tomorrow or the day after if we get lucky. Unfortunately, I ran into a problem while trying to set up Mbin due to one of the mbin/kbin dependencies suddenly disappearing out of the blue (see here).
Sorry about that, and thanks for letting me know. I had no idea the email system was down. I'll probably try to look into it after the migration to Mbin. I've gone ahead and manually verified each user from the past week, so you should be able to sign in now.
Kbin already let's you apoint users as instance level moderators (without admin permissions). So, Ernest probably just needs someone that can help with the moderation, because I can't tell he actually looks at the reports, considered I've reported several spam posts before (from kbin.social) and nothing was removed.
I just wanted to let you know, since you mentioned it, I figured out what was wrong, and the latest version should fix the updating problem. You'll still have to reinstall one last time though, unfortunately.
The kbin api has been out for a while, but there are some instances that still don't support it yet, including kbin.social. If you go to the login screen on the app, there's a list of recommended kbin instances that support both the API and external logins.