I still get this:

2015-07-09 11:01:45 | | [error] Inconsistent signing key from account manager
WTF

...

Note the messages I got:

2015-06-05 15:40:55 | | Contacting account manager at http://www.gridrepublic.org/

2015-06-05 15:40:57 | | Account manager contact succeeded

2015-06-05 15:40:57 | | [error] Inconsistent signing key from account manager

2015-06-05 16:40:58 | | Contacting account manager at http://www.gridrepublic.org/

2015-06-05 16:41:00 | | Account manager contact succeeded

2015-06-05 16:41:00 | | [error] Inconsistent signing key from account manager

...

I could not see a LOGOUT button.

So, I deleted cookies for GridRepublic.org - then signed in and now it works.

Maybe you need a "Force" logout option.

...

I have this same problem AND Grid Republic will NOT let me delete/add/edit Projects. ...