Doesn't create user and site into another site

I have 2 domains

Domain1.com and Domain2.com

I install this plugin in to domain1.com
at back-end i added domin2.com into domain1.com with Single Signon

at front-end domain1.com I register new user and create site "domain2.com/myblog"

I go to "domain2.com/myblog" i see erroe "Not Found "
and i go to back-end domain2.com don't see new user and new site (myblog) add in to this domain2.com

I only see new user add in domain1.com

What sould i do next ?