My ATV4 worked OK with Netflix for a little while but now it comes up with either an "SSL Connection Error", or simply "we had trouble logging you in. Yes I've tried everything. Rebooted Modem, Router, Apple TV. Deleted and reinstalled Netflix (many times). Turned off IPV6. Netflix still works on my AppleTV3 and iPhone and Mac on the same network. Any ideas? At the moment Netflix on ATV4 is a dead duck.