Login to your account and in the Settings menu under Password click change:
Enter your current password and then enter your new password twice.
Passwords should be alphanumeric and contain at least 8 characters.
If the current password you entered is correct, and the new password entries match you'll receive the following confirmation:
If you can't login to your sipgate account, you can request a password reset email by clicking the following link:
https://www.sipgate.co.uk/basic/password