If your printer says offline then it is very important to get it back online in order to start with your printing tasks. In order to do that, you should click on the printer’s icon and then select ‘see what’s printing’.
If you see ‘use printer offline’ then you will be required to open it as an admin. Enter your credentials for the same in order to change the offline status to online.
If you see it as ‘paused’ then you can fix that too by following the instructions that will be displayed on the screen. You can also see if the wires have been plugged in correctly or not because that could also be the reason why your printer says offline.