Anyone else having a hard time logging in after text message notification?

[Chad Clanton]

Hi all, I have a tech question for you. I run an Iphone 4S with the latest iOS version, and am setup for BP texts when I get a PM. When I get the text I click the link in it and it gives me a popup box reading AUTHENTICATION REQUIRED (bold, not caps), with regular font "bgrpkts.me" underneath, with two fields for username and password below that. I know I'm inputting them correctly, but it always pops back up with the same box. Has anyone run into this or have a fix? It would be hugely appreciated; thanks!