If you are not registered then you can only use the demo version . If you have registered then you can have access to all of the functions available. It is a small price to pay for what I hope you find a usfull service. There are placess on the web you can get some of the information without passwords. I put a lot of work in to getting the pages working and keeping them working.
Some people seem to think that because they pay no money for the service it is free.
If you use Aviators Network as your ISP then a password is not required. I belive quite simple. I'm sure that you will agree there is not much I can do about that. I am working on a more user friendly interface for problems. You may select one or more fields in the format box.