Hi. My name is***** you for your question and the opportunity to assist.
Your printer may have just lost it's connection to the router. Try this:
Unplug both your router and printer.
After 60 seconds, plug in the router only and allow it 2 minutes to fully start up
and then plug in the printer and let it start up. It will try to re-establish it's connection to the router.
The wi-fi light on the printer should indicate it is connected.
Let me know the result please.