Hi challenger gibraltar,
- Open LR
- Upper left hand top corner click on the name plate and then pause LR mobile.
Your photos don't automatically upload to Lightroom Mobile. They have to be put into a collection, and the collection must be marked as being shared. But if you want to turn Lightroom mobile off completely, click on the identity plate and there will be an option where you can pause Lightroom Mobile. The identity plate is where it says "Lightroom" in the upper left-hand corner of your Lightroom screen.
I clicked on the Lr and it gives me the option to start, when I hover over the words sync with Lightroom mobile a bubble pops up saying ' Lightroom will not sync photos with other Lightroom mobile clients'. So I am assuming it's now off. I really don't know how or why it did it in the first place, quite baffling but I am assuming it won't happen again unless I physically tell it to? Thanks for your quick respons!