Does adding images or anything else with Windows Explorer only pertain to the developer, even after publishing?
No problem, I tested it.
Maybe you could first try with the file in the Files.DirAssets folder and see what happens.
The problem would be when you want to add new images, then you would need to provide a new project.
Or use the suggestion above.
Attached you find your project as a B4XPages cross-platform project. It works on all three platforms.
Most of the code is the same, the big difference is that I replaced the Table class by a new class xTableLight.
This is a 'light' version, not yet published, of the Table class, but cross-platform.
I modified the R702.4.2.png image removing the useless white areas.
The new file size is 92 KBytes, the old one is 97 KBytes, not a big gain but useful and the display is better.