Nintex workflow for Project server 2013

Good day,

I imported workflows from Nintex workflow 2010 (Project server - Event Driven workflows) int o Project srever 2013 with Nintex 2013 and 2 of the Project server buttons are greyed-out/inactive - it does not show correctly. Thus I cannot use the Query Project Server or Update Project Properties.

I need these functions to be enabled in order to update my workflows.

any suggestions?

I use Internet Explorer 10 and all Nintex Workflow, Forms and Project server have been installed correctly without any errors.

regards

Charmaine