Good morning,
To be added, when switching from OAuth to TOTP with Query Tool on an already existing database listed in settings.xml with a refresh token, like described here,
then on Query tool 20.1.529 it is mandatory to delete former OAuth informations on the login window (there are not in the settings.xml anymore but Query Tool has in its cache the last used refresh token).
We see on the above screen cap the Tweetraps Geheim coming from the new TOTP in settings.xml.
After deletion of the two OAuth lines and one login, then the next login window will not show the OAuth anymore.
If this step is not done, then Query Tool keep an OAuth login instead of switching to TOTP.