WN3000RP Wont accept network password

> Model: WN3000RP|Universal WiFi Range Extender

   Not WN3000RPv2 or WN3000RPv3?  Look for "Model" on the product label.

> [...] I reset the extender to factory defaults, then worked throught
> the procedure for "connecting with WPS". [...]

   _Which_ 'the procedure for "connecting with WPS"'?  Are you following
some set of instructions or other?  Which you found where, exactly?

> [...] The extender shows up on the list of available wireless
> networks, [...]

   _Which_ "the list of available wireless networks", where?

> [...] when I attempt to login [...]

   "login" to what?  From what?  How?

> [...] the extender does not accept the network password.

   Says who?  When you do what, exactly?  Are you reading some message
or other, someplace or other?

   _Which_ "the network password"?  If you're using WPS, then what are
you doing with _any_ "the network password"?  As the WN3000RP
Installation Guide says (page 6):

      WPS lets you easily join a secure Wi-Fi network without typing
      the network name and password. [...]

   At least one of us is confused.

   Visit http://netgear.com/support , put in your (actual) model number,
and look for Documentation.  Get the User Manual (at least).  Read.
Follow instructions?  If questions or problems persist, then you might
return here with a precise, accurate description of what you did, and
what happened when you did it.  (Not a vague mess about which
"procedure" you followed, and what did _not_ happen when you did
whatever you did.)

> [...] I'm using the Centurylink C1100T router.

   That seems to have a "WPS button".  Did you use it?

      https://www.centurylink.com/asset/home/help/downloads/internet/c1100t-datasheet.pdf