Lightroom app deleted photos taken through app on iOS

I have recently been away for my honeymoon and used my phone to take a number of photos as it was not practical to use my dSLR camera. I used the Lightroom app as I wanted to be able to edit these and wanted to take these in RAW.

I opened the app yesterday to start editing and as i scrolled through the photos disappeared and were lost. It only seems to be the photos shot with the phone camera built into the Lightroom app. All other photos are still there.

As you can imagine this is very frustrating at loosing these photos. Last night I opened Lightroom on my PC while offline to see if these photos were still synced across but they had disappeared as well yet they were all there on Sunday night. I never deleted them off my phone.

Any help to get these photos back would be much appreciated.