I don't know why you are using WebRatio 7 Personal Edition but you can try to activate it through the manual activation process. In this case during the Wizard choose "Manual" option and follow the suggested steps.
If you want to activate a previous version (e.g. WebRatio 6 Personal Edition) the correct url to perform the manual activation is http://www.webratio.com/webratio_crm_services/wractivation.do.
Seeing on the WebRatio portal (https://www.webratio.com/site/content/en/pricing) the free WebRatio Edition is the Community now. The Personal Edition could be not more fully supported.
Moreover students and teachers could refer and join to the University Program and obtain a dedicated edition. For more details https://www.webratio.com/site/content/en/university-program.