The company known as SoftComfort, Inc is giving no response to whether or not they have access to our data when it's being recorded and modified. Please look into it for the safety of users.
According to the official description, the software is used to delete and backup messages from Skype Cloud. I believe the software has access if you grant it and not the other way around. Secondly, if you acquired the application or purchased it you know the risks you were taking. I've read all about it on the developer's website.
There is nothing anyone can do, nor me or a 3rd party, but the developers themselves can provide some light into your inquiry and the support channels have to be used: http://deleteskypehistory.com/contact.php