There is no way to recover a forgotten username or password. However, if you delete (or rename) the file that contains the ASPluris usernames and passwords, you will be able to log on using the default username and password.
Unfortunately, if you have set up any other ASPluris administrator accounts, those accounts will be removed when you delete or rename this file.
Navigate to the C:\ProgramData\ASP Microcomputers\ASPluris V2.3\ folder and locate the accounts.ds file. Rename this file by adding .old to the end of the filename.