Now I understand!

First questions are: is the service still being provided and is it
free for all? If both answers are "yes" then do they have a help line
you can call for (free) support? Is there a website that you might be
able to access from a public library or friend's computer? Do you know
any neighbours who use the service? They may be able to help.

Free access is nice but may be a bit slow and/or unreliable. If there
is no security then you are exposing all your transmissions to
possible everdropping by anybody who might want to capture your
banking and email passwords etc. Not a good situation.