I can not sign in to Lightroom to sync with mobile! I click on the dropdown menu on the left, click on "get started with Lightroom Mobile", I put my email and password, but nothing happens! I already checked the software updates, rebooted the computer, and restarted the Creative Cloud application.
What version of Lr Desktop are you running?
Make sure it’s 6.12 / CC 2015.12 and see if that works.