pnk

my xf doesnt have the key port but i have tried putting the key in the right spot but dash says smart key error

i did a hard reset by disconnecting the negative lead on the battery left it for about hour.  now my xf r-sport wont respond to either smart keys not even the central locking. when i try to start my car i get an invalid smart key response on the dash. i have had the keys checked and there working fine. also unable to pair a new key to car message says failed. only had car about 3 weeks does anyone have any ideas whats going on ?