AUTOSAVE DOES NOT WORK(Was enabled to save every 2 minutes but I found this out just now after 2 hours of work - all lost after computer crash! Unless it is a different file, in which case when I reopened my store, it autosaved the store and rewrote the autosave file with the unsaved store - crazy!)

Close what you are doing, and effectively re open as though starting a new project from scratch
Go to open shop folder
theres a list there with the last auto save that it created, i think its just one folder, as it overwrites every time it auto saves, so its always up to date
open that folder and if its got what you want in it, save it as a new name ie shop 2

Yes, that is what it did - it rewrote the autosave file when I opened my shop after the crash. It should have numbered autosaves - at least 4 and ideally an option to choose how many autosave backups we want. As it is, I didn't realize that autosave would rewrite the backup when I opened the shop.