We have been adding attachments in our 2020 Contractor edition of Premier desktop (specifically scans of vendor insurance certificates).

When you try to click on an attachment it says "failed to open file" then a file location then "specified file not found".  I followed the instructions here, navigated to our company file, to the attach folder.  There are 2 subfolders - list and inbox.  Within the list subfolder there is another folder called name.    I find some attachments there but they are saved with an alpha number code separated by a dash 800009D8-1526598597 for example... and it's certainly not all of them as the vendor I was trying to use has 3 attachments showing in the vendor file and you can't open any of them.

Why did this happen and how can I "reattach" them without finding the paper copy to scan back in... we are trying to go paperless but events like this make me want to go back to hard copy files for everything.