Ajax Scroller on subdomain

I have Ajax Scroller and all working as declared. My question is: why I can't use Ajax Scroller on subdomain of my official domain. Example: my domain is name.domainname.com, and subdomain which I use for testing is: nematest.domainname.com.
But when I copy all content from domain to subdomain Ajax Scroller don't work.  Now I exclude in test subdomain Ajax Scroller an all is ok. But I think that rules is to big limit for legal rights.

Just send a mail with your subdomain, I will add it to your license.