Hi there and welcome
you will need to connect the printer to your new wifi network in order to use it again.
Uninstall the printer from the computer.
Then connect the printer via USB cable to the computer, run the installation again via the disk like when you first installed it originally.
During the installation you will connect it to the wifi network and once done, you can disconnect the USB cable and print wirelessly to it again.
I can also do these steps for you, and have made a request via Additional Services. This is optional, and if you choose to do this, I can, with your permission, remote into your computer while you watch and do all these steps (and deal with any problems that arise during them) for you. Or if you do not choose to take this service, we can continue here. This is no problem at all. Just let me know please.
Else let me know the results please.
yes I can do this remotely.
Accept the offer and I can then do this.