Whats up with Lightroom?

Every once in a while I try to use Lightroom when traveling.  Usually it doesn't sync... or sucks up my battery.

This time I selected a bunch if photos I want to share... I had 30 but for some reason Lightroom limits me to 15.... WHY??? Then I select 15... it takes a good 15 minutes or more waiting for them to upload.... then it asks me where to share.. I click Facebook and boom.. I'm back in Lightroom with nothing posted or shared. What gives? I've tried 5 times... its extremely frustrating and time consuming!! Shouldn't it work?? I always have issues.... always!!!