My website URL is listed as MyAwesomeWebsite.com instead of myawesomewebsite.com .
rpxnow.com doesn't recognize that they are the same address and considers the capitalization invalid.
Clicking the "Get an RPX API Key" results in this message:
Invalid value "http://MyAwesomeWebsite.com" for parameter 'base'.
Must contain an HTTP or HTTPS URI, or a host name.
Changing the URL manually to:
Gets the API key however the wordpress login page 404s the login box and the user profile page RPX box contains the message:
Invalid parameter: token_url
Changing the WordPress address (URL) under settings>general to all lowercase resolves the issue but this is less than the ideal scenario. The problem is most likely only able to be resolved by rpx however you might want to make this an known issue in case others come across this problem