Thanks for your investigation. I will check again that I have a website domain name in the Google Connect.
I had looked for a website url in there but could not find it.
But now I found it, hidden under the Parameters properties.
It was at http://www.google.com/friendconnect/admin/site/settings?id=
I changed the domain name to reflect the new one of learnintouch.com
But after saving the page, I still get the same error message at my website...
Strange.. Maybe it's a propagation timing..