Updating Unlock Manually
In the case that an installation can neither update it's support/unlock status automatically over the internet nor does entering the unlock code as described here work then you can manually enter the unlock code.
To edit the unlock code manually, you need to edit the HicSettings.ini file located in %programdata%\HicSoapPro\Settings folder. That will usually be the c:\ProgramData\HicSoapPro\Settings folder. In that folder double-click the HicSettings.ini file.
And then edit by simply modifying the UnlockKeyStr value.
You should also verify that the RegistrationNo in the file is the same registration number that you emailed support to get your unlock key.