I have a TL-WDR3600 router and TL-WPA4220 extenders.   The router is broadcasting an SSID but really only within the study and the rest of the house is covered by the extenders which broadcast the same SSID.   Everything works as expected except for wireless printing.   The printer (HP4520) is located near the router and a PC connected to the router (wired or wireless) can ping it and print as normal.   The printer has a static IP allocated.  The printer is also able to receive print jobs via email.   When a PC is connected to an extender it cannot see or ping the printer (but you can still email it a print job) and the only way (so far) to print natively is to bring the laptop into the study, bounce the wifi to connect to the router and then it will print as normal.    Any suggestions as to how to get the PCs and printer connected over the extenders would be much appreciated.