A note that i attempted to put the purchase code but its not working.

It returns the error, the license key is unknown, error code 1003

Pleases download the license file and email to [email protected] so that we can check for you. Thank you

I sent the email two days ago but still no repsonse

The email response will be slower than this postal. I guess you are trying to install windows installer with envato purchase code. You only can install web version if you have purchase from envato. Windows installer require different license key that should be purchase from [SimplePOS (Windows Installer)](/products/simplepos-windows-installer). Thank you