In the app, the ? at the top right has the short form. Every word on the page opens its explanation.
Something wrong? Press Report a problem in the app's Help, or on Settings › About. It writes a report of your receivers, their settings and the app's log. You see the whole text. It is sent to us only when you press Send. If a receiver stops with an error, the notice offers the same.
Your licence: get it again from your receipt's transaction number.