[New Blog Templates] ProSite Signup Field "Allow search engines to index this site"

Hi Support Team,

I used Pro Sites together with Blog Templates plugin. In the Pro Site's signup page, there is a field called "Allow search engines to index this site" where you can select Yes/No. The value is overridden by BlogTemplates from the copied template website. If I deactivate Blog Templates, it will correctly set according to what I selected during signup. I have tried adding this code in wp-config.php but its not working:

define('NBT_TO_MULTISITE_PRIVACY_ALLOW_SIGNUP_OVERRIDE', 1);

How can I make it work?

Thanks