Hello, I’m Nathan, and I’ll be assisting you today. My livelihood depends on your positive feedback, so your satisfaction is my highest priority.
Sorry to hear you’re having trouble.
WPS is not a button on the printer itself,
if you go into the printer settings menu on the front panel, under network, then wireless, WPS will be an option you can select there.
Then, IF your router supports wps, you'd press and hold the WPS button on the router to complete the process.
IF this does not work or your router does not support wps (many do not) then you'd finish the wifi setup manually, scanning for and selecting your network, and then putting in your wifi password.
How are you trying to print from the kindle?Which model kindle?