I installed: How to Use How Did You Hear About Us Version 1.3.1 and it seems to work just fine. I added all my drop down pre sets and wanted to do the "other" option.

Here is what the instuction says:
This contrib creates a drop-down box populated by admin entered
(Admin->Extra->Referral) referral sources that prompts the customer where they found out about the site.
//OK, UNTIL HERE ALL WORKS FINE...

//NOW THE OPTIONS BELOW DO NOT WORK, I CAN NOT FIND THEM IN THE DISCRIBED LOCATIONS.
Admin can also make this required or not (Admin->Configuration->Customer Details). Also includes ability to control whether or not an "Other" appears in the dropdown and if so, displays an additional text input box (Admin->Configuration->My Store).

I checked if I had some files in override that were not updated but could not find any. Anybody any suggestions why my options as discribed above don't show up in Admin?