HGC

I've been using Scannable for the past few years, far better and easier to operate than iOS scan feature and the PDF files are so much smaller (data-wise)...but... on a number of occasions, the last being today, I opened the app to scan a document & all my other scans done last week have disappeared - also, all previous deleted scans, though not yet expired, are not in the recover section, it's as if I'm using app for first time. Have seen this problem posted quite a number of times over the past few years but no solution? It's almost 2020 & the bug still exists - any definitive answers out there or from Evernote?