HI Juan,
Thanks for the reply. I've had Moodle Mobile 3.0.321 (2015111114) installed since before trying all this and am still getting the same series of events...
1) Open app
2) Add site
3) New window pops up with login area
4) Login
5) Taken straight to Moodle site via the same browser window and not back to the app
6) app never saves the site
Not sure what else there is to try?
-Todd