What Does "Service" Mean in the Community Dash?

"Service" indicates the login method the user went through to gain access to the site.

For example, "Maestro" means they used the login with email and password option we provide and "Facebook" means they used Facebook to log in. 

If a user has two accounts with the same email, one with "Maestro" and one with "Facebook", this means they have two separate accounts and they are not linked. At this time, accounts cannot be linked.