Seriously dude, follow the community etiquette and read the plugin description/faq.
Firstly do you actually understabd what the plugin does?
Please reread the the plugin description. It only allows cors where two domains are on the same Multisite (as other approaches create a security risk)
Secondly have you tried debugging the problem by deactivating ALL other plugins (i mention this in the FAQ)?
Finally did you raise an issue in the support forum?
I can assure the plugin does work on hundreds of sites (including all of my own) and if it does not work for you I’m happy to try to help. But lashing out helps no one and shows you be ignorant.