We’ve had 100s of thousands of users decrypting and opening AxCrypt version 1 files with AxCrypt version 2.
So, while this is not the answer you’re looking for, I don’t think that’s the problem.
There’s something else going on, or your former staff and you are not entirely in agreement on what’s happening.
While with computer software we can of course *never* 100.0% rule out a programming error causing a problem like this, in this particular case I think we’re barking up the wrong tree if we start by investigating that avenue.
Why don’t you start with uninstalling AxCrypt 2, then installing AxCrypt 1 legacy and try do the decryption with that software? Then we’ll hopefully rule out the theory that AxCrypt 2 is not successful in decrypting the old files. You’ll find the old version at http://www.axantum.com/ .
You might also want to send a screen shot showing exactly what happens when you try to decrypt.