So, I've been trying to trade with a friend online for over the past hour, and we just can't get it to work. I've followed all the steps according to this guide:
http://gaming.stackexchange.com/questions/291719/how-to-i-trade-with-friends-over-the-internet-in-pokemon-sun-moon
We disabled "Communication with Guests", and that didn't help. Anyone have a guess as to what's going on? Are there any additional requirements that need to be met?