My SkyDemon, running in a 3g iPad Mini has stopped reporting NOTAMS, or Wx. It worked fine on a trip last week, but now when I've plotted a route, selecting the NOTAM tab reveals a blank NOTAM page, with a message: "Your NOTAM briefing will appear here when you have plotted a route, or specified a search area". I thought I had, but clearly not!   The Weather page reacts similarly.

I'm new to both iPads & SD & I'm a non-techie.  I realise it's probably something I've done wrong, but I can't find what that is.  Please can anyone advise if there's anything obvious, and also confirm the basic iPad settings, eg 'Mobile Data', etc?

Grateful for any help, and sorry to be a numpty!

Phil