Where is BPS installed in relation to your subdomain sites?
Example:
BPS is installed on this WordPress site: mydomain.com/wordpress
Please post your subdomain site structures and types of sites.
Example:
subdomain site A is a WordPress site. The DNS A record is subdomain1. The folder that this subdomain site is installed in is /subdomain1.
subdomain site B is an HTML site. The DNS A record is subdomain2. The folder that this subdomain site is installed in is /subdomain2.