Weird characters in Select Shipping Method

Hi!

After I configured NopCommerce to use USPS as shipping method, it displays the following options for "Select Shipping Method":

USPS Priority Mail<sup>®</sup> ($5.10)

For the screenshot, please click the following link:

http://test.ameriduo.com/images/nopcommerceerror.jpg

My question: where does "<sup>®</sup> " and how can I remove that?

Thanks in advance!

buzugy

Note: If we use <sup>®</sup> as html source code, it will be displayed:
^®.

I searched the source code of NopCommerce and found it is used in AjaxControlToolkit.dll.

check: https://www.nopcommerce.com/boards/t/8047/usps-postal-changes.aspx

Thanks for the information.