XML-RPC not working on subsites

Having an issue where my subsites are nor able to connect via XML-RPC, I have prosites set to allow at lowest level. All subsites are at level above so there shouldnt be a problem.

I’ m using the WP app for iphone to connect, I can connect to my primary site but none of the other subsites.

When disable the “Restrict XML-RPC” module from Pro-sites, I can login in my subsites.