LR on your laptop is still a desktop version. It is just now able to upload to the cloud to replicate photos to either http://lightroom.adobe.com/ or an iPad that has LR Mobile installed.
I think you probably just want to change the LR 5 identity plate back so it doesn’t mention LR Mobile all the time. Hover over the identity-plate area, and click on the little triangle that appears, then choose Change Identity Plate.
When I go into Develop, I do not see a slider for many of the adjustments such as clairity nor vibrance as was in the previous version before the update? I find them in Quick Development in Library. Is this normal for the 5.7 version?