If you need to change your password for some reason. You can do that in the Account area of Fabrik. Click on your name top right to and Manage your Account.
Once in the account area click on the Security tab. To change password you will need to enter your old password for security reasons and then your new password twice, click the update button and you are all done.
Remember you have changed it, as next time you login into Fabrik your old password might be saved in your browser which will no longer work so you will need to enter your new one.