howdy, i am very new user.  have dji mini 2 drone using DJI Fly app.  
I am very confused by the Album set up in the app.  could someone explain (in really, really simple terms) the difference between aircraft album and app album are?  sometimes the pictures in each are the same, sometimes different.  I painstakingly get some pics and videos to download - often told that things "couldn't download" without giving me a reason.  some have 'cache' next to them, some don't.  I am going round in circles here.  
I like to understand how the files are managed, so i am not downloading same files each time, but also not losing any information that should stay.  
Or should i just download from SD card?  if so, from which album?
Thanks for your patience!

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