I honestly think that many of the issues folks have with the app, or remote control is on their (Traeger's) side. Not the app, or the grill connecting to WiFi, but where they are hosting this application.
I troubleshoot hosted applications in the cloud for my clients all the time, and most of the little things I see, and what has been reported here point to where Traeger is hosting it. Mine has been working well at home and lake. But notifications are flakey, and I need to be prepared to monitor it all the time to be sure it has not frozen.
When it works, it's awesome. I have used it while at home on the same network, while out shopping and doing ribs and even during the 4th of july boat parade, I was monitoring my first brisket. (which turned out amazing)
So you won't hear me complaining too much. But it is a bit finicky at times. And alerts do pop up at odd times. I would also like to know how to clear a recipe when my wife decides to go rogue in the middle of a cook. She tends to "not like to be told what to do by an app or recipe" but likes the idea that the app gives her guidelines.
Good luck all.