Latest IOS update has caused app to crash – Briefcase Pro - File manager, cloud drive, document & pdf reader and file sharing App Review

Tries to open, but immediately crashes. Can’t get to my documents, and if I uninstall to reinstall, I will lose those documents. Appears to no longer be supported.
Review by Old Fogey60 on Briefcase Pro - File manager, cloud drive, document & pdf reader and file sharing App.