I am using the Catalyst App by Elements Cloud and its looks pretty good for visual workflow mapping and analystics. Has anyone used is and able to advise some insight and feedback

As user was created with Admin profile in sandbox, but when trying to install an app from the AppExchange the sandbox user name does not work. With some reserach saw that the user would need to have force.com login. How would that user find his force.com login information?

As user was created with Admin profile in sandbox, but when trying to install an app from the AppExchange the sandbox user name does not work. With some reserach saw that the user would need to have force.com login. How would that user find his force.com login information?