Question re email sent to contact after first request

Hi there

Two questions from a new user:

1) When a customer sends his/her first request, and he/she is not already set up as a contact, an email is sent to that customer with a link to the request. However, when the customer clicks on the link, he/she is brought to the log in page and cannot log in as doesn't have username and password yet. Is there a way that the username/password can be sent automatically? It seems that it is only sent when the support rep goes in and resets password.

2) When I change username for a contact and then click on "Reset password", the original username is displayed and the email notification is sent with the original username instead of the new one. Am I doing something wrong here?

Many thanks for any help!!

Patricia