Photos not exporting with all edits to MacBook Pro

Hello! I am having some trouble with exporting my edited lightroom photos to my Mac. I have been editing an album and everytime I go to export and download to my computer, it is not transferring all edits. I have been exporting as a JPG. What is weird, is that on my LR Mobile App, all of my edits show just fine and I can download from my Mobile App to my phone and it reflects all of the edits. I even made a copy of a photo, resetted it to original settings, downloaded the original and my edited photo and they were different but the edited photo STILL wasn't showing all the edits. I have tried researching on here what to do - I have reset lightroom, updated lightroom, updated computer, restarted computer, checked that everything was synced and backed up, tried downloading to different folders/subfolders/files, etc. I thought it was just the new album I was working on, but now when I go back to previous albums, it is doing the same thing and not displaying all edits when exporting. I have been reading that some people have said to update the Metadata and Catalog but I cannot find where either of these are in my Lightroom and am at a loss. I've only been using Lightroom for about a year as a new photographer and I have version 3.3. This is driving me mad as I'm trying to upload some photos from a shoot. I so appreciate any advice and help! I've attached a picture of on the left (the lightroom edited version I want reflected, and the right, what downloaded to my Mac, which as you can see the lighting, shadows and color of the trees differ).