Same her - I just tried to authetificate geocaching.com on twitter and the authorization screen always came back an Geocaching did not appear among the allowed apps in twitter. After clicking on "Authorize" (or what it is in English), the page is reloading, after clicking another time, I get logged into twitter (my name on the uper right). But then, nothing happens even after clicking a couple of times. I then clicked "Cancel" - same thing - just a reload.
I tried on IE and Firefox (both newest versions) under Windows 8.1.
Please fix that.
