There is no helpdesk, just little old me. So I can only give you limited support, and by email only. Please try everything you can think of before sending me email. Describe the problem, the error messages you get, the things have you tried, the URL of the page you are trying to measure, etcetera. The more information you give me the more likely I can help you.
Constructive email is always very welcome.
Only with your help can I further improve this website.