(App) Emailing individual troop members

I would like to know how I can email specific individual members of my AHG troop in the TroopTrack app (iPhone), as opposed to emailing to a mailing list. In the Communication section of the app, all our troop’s mailing lists are there and it’s a beautiful seamless task. But if I want to email a specific member (or multiple members) there is no option given for achieving that task in the app (unlike on the desktop version which is very clearly given as an option). I tried doing it by clicking on an individual member’s email address which is hyperlinked in each member’s profile - but when I do it gives me this error message: “Sorry, your device is not configured to send email.” Please help!