Fetchit signs in to Digitail as a user, so you need login details for the clinic's Digitail account: an email address and a password.
If the clinic is not comfortable handing over a staff member's login, ask them to create a new user for Fetchit instead, for example info@fetchitdata.cloud, with a password they set.

Record the credentials
Whichever login you end up with goes into the client's ITGlue entry, and into Orion's PMS settings.