Unable to print after upgrading to VDSL

I recently upgraded our internet to VDSL and have a new modem Huawei HG659. Since then I can not get my printer to work Epson xp200 using wifi. I assume this is because my modem dosent recognize it. How do i resolve this? I have run a diogniostic test and it says the computer is connected to the internet but the printer cannot be found, the address may have been entered incorrectly. The WIFI light is flashing on the printer and the when i go into printers on the mac it says the printer is not connected. Thanks

Printer Epson xp200

Macbook Pro os x Yosemite 10.10.4

Modem HG569