I have a Canon printer.  Previously had an ARRIS modem/router and not have the TP-LInk router.  ON the Arris I had to create a Guest network, which seemed to be always live, then use the Canon MAC address to limit that network to just the Canon.  This really worked nice or otherwise I always had to power down the printer and on again to get it to be active so I could print from Apple iphone or MacBook using regular 2G/5G networks that those Apple devices were on.   No, Airprint simply didn't work with the printer, even though that was supposed to be a feature of this printer.  NOBODY at Canon could assist with this issue.  I figured it out myself.  So, does this TP-LINK route have that ability to have an open SSID, but use MAC address to lock out anyone but my printer?