Initially I've downloaded a cloud version of Lightroom. After a few days I've decided that the standalone version was sufficient for my work, and so I've purchased a Lightroom 6 Mac version from Amazon.
Before I've downloaded and installed the purchased version, I've removed the trial version (Using CleanMyMac 3 utility). I then went ahead and installed the purchased standalone version - smooth steps.
Excited, I copied many photos from Mac Photos library - also a smooth step (followed some tricks suggested from the Forum.)
However, soon a message "Lightroom mobile trial expired" appeared on the main page's upper right corner.
I could not figure out how to remove the warning message as I am not a trial user any more.
Please help and advise what steps I need to do.
Click on the identity plate in Lightroom. You will be able to see where to pause Lightroom Mobile. Then you won't see that message anymore.
Thank you very much. You instruction did the trick.