Hide License

I Just shop your B2BKing developer plan and i just activated on one site, but the only options to hide is using a snippet

add_filter('b2bking_license_show','__return_false');

add_filter('b2bking_white_label_show','__return_false');

My problem is if there is a way to find every site where the license have be activated. 

If I bought the license and install it on a website and after another developer work on the website he can access to my license and with that use it wheaver he want. 

There is a way to resitrct where the license can be used?