I'm sorry about the issue. What's the model of your printer?
Do you have windows xp, vista, or 7, or 8, 10, or mac computer?
What's the model of the tablet?
What's the model of the internet modem / router device?
Was there any change recently to your internet service / internet modem / router device that may have caused this issue?
Have you tried to disconnect the power cord(s) from your internet modem / router device(s) for a couple of minutes, then re-connect, then wait a bit and check?
Are both the printer and the tablets currently connected to the exact same Wi-Fi / wireless network name?
If the computer is wireless, are both the computer and the printer connected to the exact same wi-fi/wireless network name?
Please reply at the box below. Thank you,