I have just switched off the wireless on the extender, and rebooted my laptop, closer to the router and I can ping the printer. I then unplugged the extender to check the model Which is WPA4220,....

I cant connect my laptop, which is connected to the AV600 extender, to my wireles printer which is connected to my router. I have the extender configured to clone the SSID and password. I have 2 PCs...