When you are logged in as a member, you will see an [Edit Profile] button under for Forums main menu [Forums}>[Edit Profile]. Select this option and you will be able to change your Nickname and public display name along with your Avatar (member photo) other details. You can also access your profile by clicking on your name in any forum posts you have created.
Under [Help]>[Contact Us] you will find a form. Select <Site Support>, provide as much information as possible along with your contact details and we’ll respond as soon as we can.