@steko That's expected because F-Droid builds the app and signs it differently than Dat Installer (if I'm not mistaken, this problem also exists between F-Droid and Google Play). Also don't uninstall / re-install, as you *will* lose your account if you do that. F-Droid will soon have version 0.1903.20, they build every 3 days or so.
@steko In the future Manyverse will store your core account in a user directory independent from any apps, so that even if you uninstall, you won't lose your account. For now, it's sensitive.
@manyver_se I was careful enough not to uninstall (since I've been bitten in the past). No rush however! Thank you