could the autologoff function be the reason for the problem?
When I use the file, I am logged in (otherway I would not be able to open the file). Then (somtetime hours later) I close it. I do not check every time AxCrypt, if I am still logged on or not or if there are files to be encrypted and copied back. Usually I have a lot of files open, some are encrypted, some not.
So after the applications with the encrypted files are closed, I would expect a message, if encryption is not possible because of log off or a message, that there are still decrypted files on local disk…
Perhaps there is another problem. I have frequent old encrypted files, because the current files are still decrypted on local disk.