NTO's have been a significant problem all year. I don't expect them to be fixed this year.
I've had this issue all season long, it seems if you have one NTO the game automatically assumes you will have another one. The only solution I found is connecting to another network and have that connection long enough for the game to assume your new connection is fine. One day my mobile internet is fine then a few days later I cannot go 3 minutes without a NTO.
Having real problems probably since early this week. Only in competitive modes: OD and LvL. Haven’t really played Arena since last weekend so couldn’t say there. Definitely not my WiFi. Maybe my device, but don’t think so; not having any problems with any other apps. Specifically, I’m playing, a play ends and that pop up comes up: “you must be connected to the network...”. I hit ok for a while but it just keeps coming back up and I have to shut down the app. Anybody else having issues?