Hi Justin, Lightroom web only uses previews so you really need to restore your catalog and original images from a backup.
It is usually straightforward. See if this link and video tutorial helps:
Ah, like I mentioned, I lost the original catalog/images when my computer's hard drive unexpectedly failed. I'm looking for a way to get the catalog directly from Adobe's cloud sync.
I think it is only possible to download one jpeg at a time from LR Web. Only photos in nominated collections are sync’d. Not the catalog. For the future its best to backup each time you quit editing and keep the zip file on an external drive together with duplicates of your image files.
I normally back up all my data. I had sort of assumed that syncing to Adobe here with my lightroom collection would be a responsible way to backup my lightroom catalog in case of data loss, and because I could see the catalog online and on mobile, I had believed that this was a fair assumption
A fair assumption or wishful thinking, no, you can't download the synced data. You need to use your own backups of your catalogue and originals.
I am Laurent from Brussels / Belgium.
I have the same problem as yours. Didi you finally found a solution to your export issue?