Hello, Modem, WIFI all working fine, several devices connected, then for some reason my Samsung Galaxy 8s+, surface Pro, iPhone 6s, and sometimes ASUS laptop get dropped and can not connect to the same WIFI as the other devices that stay connected. Tried rebooting phones and computers but still get "authentication error occurred". The whole time 3-4 devices are using the same WIFI connection and password with out issue. After a few mins to hours the phones and laptops connect for some unknown reason. This happens several times a week and even a day. No rhythm or reason.