Mail Chimp Authorisation

Mail Chimp Authorisation

Hello,

I've installed Mailchimp into my CRM program, i am unable to link the two and i'm stuck at this point of the process. I go to click on "Authorise Connector" and it just brings up a blank page. 
I have tried this on different browsers and computers to no success. 

I've had real problems with Mailchimp and Zoho over this and still i am unable to find a solution.