I recently installed the Todoist app for Windows 10 desktop environment. One annoyance I found was the inability to quickly start the app using a keyboard combination. This was possible in the legacy version.
A workaround I have discovered, which works for any Win 10 app, is to Pin the app to Start and then drag and drop a shortcut to e.g. the Desktop. Afterwards, it is possible to edit the Shortcuts ‘Shortcut Key‘ and provide a key-combination which will start the app.
Right-Click → Properties → Shortcut tab → Shortcut key