Stopping LR Mobile from always wanting to move storage from internal drive to sd card.

Every time I  use LR Mobile on my chromebook it tries to move all my photos from the internal storage (I have plenty) to the sd card (virtually Nil) and I have to stop it, very annoying to keep having to do this.  Cannot see any way of stopping it doing this.  Also, the one time I did allow it to transfer everything across although the photos were there on the sd card, they were not visible so it was completely a waste of time and had to be reversed. Does anyone have a solution to my main point?