@carmenlisandrette So it appears to be the official website of the Greek School Network which is a national network of the Ministry of Education, Research and Religious Affairs for educators and anyone working in the education sector within Greece. The helpdesk page appears to serve as technical support and assistance for those who want to ask further inquiries.
It seems to explain what support is used for and what it's not used for, as well as listing contacts based on a given Greek region.
That's all I could gauge from the website's page so far (including some manual additional research)...