The name of the field is confusing and ambiguous.

The SimBrief Account Options have multiple fields, none of which matches:

Alias (Username) - this is what most addons use, including iniManager
Pilot ID - which A350 uses, but note how it says pilot not user
Original Username

even E-mail which is the username you use to log in these days... 

I seem to come across this inconsistent naming method in a few add-ons… It’s either the same name as what Simbrief calls them or is explained so one doesn’t have to guess which one does the plane need now. Because one developer asks for the alias while the other one asks for the Pilot ID.

I think Simbrief itself adds a bit of confusion by not getting rid of the Alias (username) because when Navigraph bought Simbrief they changed the login method from username to email address which then became the user name instead. So both companies could do for less confusion really.