What is the correct way for me to configure synchronization across two devices?

Question

No matter what I try, I can't get the same deliveries to sync across two devices. What specific application settings should I choose? If they get out of sync, how do I get them back in sync again?

Answer 1

I have the same problem. Seems like they want us to purchase the app on each device... as shown by the lack of customer support regarding this recurrent issue. Then again, would that even fix it?