I’ve not had (knock on wood) any issues with my RT-700 connecting or staying connected to my Wi-Fi. I find the app sufficiently useful. However, my beef with it is if you start an overnight cook, say at 11pm, you can only see the temp tracking chart until it hits midnight. Something about the “day changing” causes it to lose its line chart. The result is no good history of that cook. Maybe a nit picky thing to most but it gripes my butt.