I purchased Lightroom 5 and have been using it for a number of years and it has been okay - recently I noted that the heading had changed saying "Get starting with light room mobile". Today when I went in to check my photos I noted that they were not sorted as capture date and in fact some had little boxes on them indicating they were stacked.
So frustrating and would appreciate help - firstname.lastname@example.org
Change the sort order.
Go to the menu command View->Sort