Bummer - you're right - the translations gone. I know the staff on the ALS sites are working pretty hard to get things going and I'm sure it has just been moved temporarily.
Long story short - the XFactor on this is to have a building OR Foliage in the diorama. And XFactor 2 - you must have a picture or story line from actual accounts, movie, book, web site etc. that your diorama is based on.
For example in my gallery you'll see a BW photo of a guy running out a door, two or three photos down you see I have a guy doing just about the same thing.
https://armorama.kitmaker.net/photos/showgallery.php?cat=12178&ppuser=242You can also base it on a 'snippette' from a book. Since you are 'reverse engineering' you may want to toss out the question -"Can anyone tell me if this was a scene?"
Eagle and Faust have the final word on this so you can always PM either of them and get a direct order form the CO.