There are options in the Fenix App. This article will tell you what they do.
Product Configuration:
Streamer Mode
This hides the username/email at the top left of the app.
HOPPIE ACARS CODE
This is a code for use on the HOPPIE Network. You can see here for more information on this:
How do I get HOPPIE ACARS CODE?
Please note: this is not required to use with the FenixSim A320.
Simbrief User ID
This has now been moved to the EFB > Settings app with V2B2.