I have now upgraded the Divisions by zero to Lemmy 0.19.0. I haven't seen any issues, but of course you will have to re-login.
Please check the new features here
I have also updated Pythörhead to be able to handle the new authentication (as well as the old), so if you're running a bot, make sure to update your Pythörhead dependencies.
Now is also a good time that you can support the running of this server. If you just want to support this instance, please use Ko-fi and you can get a custom emoji here. If you want to support my general development efforts as well (Lemmy, Pythorhead, Fediseer, Tagginator etc) feel free to use my liberapay
Yeah it's unfortunate, but it isn't and unfortunately won't be the first time it's been abandoned, since it was a fork of a different client called Lemmur which is what the splash screen is from. I think part of the reason is that Flutter apps are just really hard to maintain, combined with the fact that the Dev has stated he doesn't understand Auth very well (likely was using the Auth code from the old version).