Mid February 2023, I have seen a large number of printers that suddenly stopped working with Optimum (formerly Suddenlink) modems. My guess is that Optimum pushed out an update to the modem that is causing the problem. The printer is connected to the modem’s Wi-Fi, but no computer is able to talk to the printer. If you restart, the printer successfully reconnects to the Wi-Fi, but the problem remains. And the only devices having trouble are printers, the brand does not matter. So far, the modem/router that I have confirmed to have this problem is from Oobe.

Further investigations reveal that factory resets will fix the problem temporarily. Sometimes you need to do a factory reset multiple times to fix the problem.

After checking with Optimum tech support, this is an issue they are aware of. They recommend purchasing your own modem and router to fix the problem.

I never recommend renting the cable modem from any cable company. You should buy your own modem and save the $10/month fee. I usually recommend a modem and router separately, but if you don’t want complicated you can a router/modem combo. There are many good choices, so long as it is a DOCSIS 3.1 cable modem. I usually recommend buying the modem and router separate, even though it will cost more.