Unfortunately there is no way to get the catalog back.
That is why back up is always recommended.
So there's no way to retrieve any photos with non-finalized edits from mobile, except for exporting them to camera roll?
Only previews get shared with Lightroom Mobile.
It will try to find the original catalog to export, so there is no way.
Hmm that seems strange, 'cause I have those photos available on both iPhone and iPad, they are editable and exportable, and I even can choose whether to make them available for offline editing. When I do so, they are downloaded from somewhere (cloud? I have a valid subscription), and I can edit them.
It's funny you don't have any backups of the LR catalog as the default setting in LR is to make a backup every week. Along with that if the LR catalog and the backups are in the same directory and on your main operating system drive it is also funny you don't have any backups of that whole drive which would include the original catalog and all the backups. Maybe it's time to rethink your data backup method, strategy, so something like this doesn't happen again.
The photos on your iPhone and iPad are only representations of the photos from the catalogue that you had synced, and they will disappear as soon as you try to sync another catalogue. If you can export them to Camera Roll or Dropbox, say, you might be able rescue some work, but it will be a lot of effort.
You definitely need to review your backup procedure. With New Year coming....
Thank you, I actually have it under control, that's why I have my photos safe. But the question was not about backup strategies
I was wondering if there's a way do retrieve files that are somewhere on the Adobe servers. They were intact and fully functional ever since the catalog loss.
But thanks anyway. I just thought that Adobe sync is more reliable than it appeared to be.
AFAIK the Adobe Sync feature is for settings and the like. The LR mobile system only allows you to sync previews of images you have synced and if you do edits on them in the mobile app those Edits are synced back down to the desktop catalog, not the actual image file.
Your discussion started with you saying you have no backups of your catalog. That is how it got to discussing your backup strategy. Although your photos are safe it seems the program you use to edit those photos isn't very safe and that mean all the edits you have done on those photos is also gone.
Best of luck to you.