I think I have the same problem but with WebCallBack and also with Call Forwarding through Betamax (i.e. when the Voxalot IP is used directly). See this thread:
http://forum.voxalot.com/voxalot-sup...erability.html
As for the button, I think it must just be your website. I think mine is working fine:
Flat in Golico - Contact Us. View source will let you see if the code is the same - I have the most up-to-date one from Voxalot. Interesting that anyone can view my voxalot ID this way and also could easily add a button using my account to their website, although it would only call me of course!