All photo edits disappeared. Originals still there.

hi.

I’ve been using my iphone 6s and the Camera+ app for 2 years now. I edited thousands of photos. Now all of a sudden I open my camera roll and all photos have reverted to the originals.

The edit data seems to have disappeared from my device, since the stored photo data decreased by almost 10GB. When I try to make a new edit, it works, but moments later it has automatically reverted back to the original.

I’m on iOS 11.3 and am using the most recent version of Camera+

Any help to fix is much appreciated.

Thank you!