
Hello, I’m Virginia, a fellow user like yourself.
Sorry to hear you’re experiencing problems.
If you open Edge are the same passwords listed there? I believe the Authenticator app syncs with Edge’s password manager, hence why it’s being removed from the app. If they are then I would try exporting from Edge.
Is the file itself blank or blank only when you import the file?
To backup the 2fa codes then you’d need to set the app to backup to the cloud, this is under the app’s settings.