Twitter not working with Comments Plus

On request by Pranaya Chaudhary I am recreating a new thread regarding the above.

Ok I am giving this another try and alas I am back to the same old Twitter problem.

See here and try to login with Twitter - http://compacthealthsystems.co.za/products/massage-tables-beds-fixed-steel-framed/

Keep on getting error:"There is no request token for this page. That's the special key we need from applications asking to use your Twitter account. Please go back to the site or application that sent you here and try again; it was probably just a mistake."

I am using WP Multisite with Domain Mapping.

A have resetted Twitter keys & nothing seems to want to work.

I had this problem before & gave up and reverted back to Disqus - but then I have no SEO value on my comments and I don't have proper sharing to Facebook etc.

I have furthermore also noticed that when commenting with Facebook login the author name displays as "Anonymous".