Setting up your SatFi-2 app for Gmail mainly relies on steps taken in your Gmail account first and then the app. The key step in the app is to enter a 16 digit/letter group that is first generated by Gmail outside of the app. Get that code by being in your Gmail account while online on your normal wireless network. Then get into the SatFi-2 app to enter that 16 digit/number group.
Setting Up Gmail for the SatFi-2 from Thomas Farley on Vimeo.