A SOAP error is likely down to the communication settings, which are not allowing your software to communicate from the product to the licensing server (myp11d.com).

To confirm this, use a web browser to see if you can get a confirmation back from the web service running on the site at https://www.myp11d.com/myp11dwebservice/myp11dwebservice.asmx - if everything is working as it should be, you'll see the screen below:

If you DO NOT get that response, then this site is not allowed (or blocked) from your location and will need white-listing to fix the issue (Internet Explorer/Proxy/etc). To resolve this you may need to seek the help of your own IT Team.

The addresses that need to be while-listed for the P11D Organiser to function correctly are: