Nice! Good job sticking with it!
For the images that aren’t showing up, are you using something like a page builder to lay out the page?
Also, is it only on mobile, or do you have the same missing images if you try and access the Live Link from another computer?
Sometimes various page builders will save the css style rules for background images to a file on disk, and so if the style rule is referenceing example.local then those images won’t show for a site that is accessed over a Live Link. I think Local can handle this sort of thing in most cases, but it’s possible that this is an edge case for something where the background image is saved in a way that Local isn’t aware of.