Hi,
Unfortunately we are not going to support via the Moodle Mobile additional features plugin the recent plugins additions (database, feedback, lesson, and workshop).
The reason is mainly technical, there is a lot of new technical stuff in Moodle since 3.1 and some plugins like database required a big refactoring (not suitable to be backported in a plugin).
Here you have a table with features and what's supported by Moodle Mobile additional features plugin
https://docs.moodle.org/33/en/Moodle_Mobile_features
Sorry for my late response, Juan