register using google & multisite?

I asked the same question about the simple facebook connect, basically I am using a sub-domain multisite site and I am not able to get the ‘register’ with google+ to show up.

I found a few 3rd party plugins (monthly fee involved) that all seem to work with multisite, so I am guessing it’s possible.

Am I doing something wrong with the setup of this plugin, or is it just not yet possible to register when I am using multisite?

thanks

https://www.ads-software.com/extend/plugins/simple-google-connect/