I purchase an AX20 router to use with my Xfinity modem. Worked great for about a month. Then failed. Replaced it with like item. I disconnect every evening, then reconnect the next morning.  Now. 100% of the time I have to connect then, when I attempt to use the internet I loose the connection and have to reconnect a second time. From then on, everything is stable all day. This is admittedly a minor nuisance, but I would like to know how to fix it.