How is the printer setup on the network? Via USB or via Wi-Fi?
Your printer is not Air Print compatible which is why your iPad and iPhone do not see it. I can connect to your computer and install it for you so that it will be connected to your computer. Would you like that option?
If it use to work previously then did you check the printer to see if it is still connected to Wi-Fi? It is possible that it was disconnected.
Unplug the printer from the wall and wait 1 minute then plug it back in again. Wait another 2-3 minutes for it to connect and see if it is showing up now.
Okay, I am going to send you the remote assistance request so I can connect to your Windows 10 computer to see the issue with the laptop.