Hello to all friends Don't worry at all.
You don't need to pay for the license.
I nulled this program in the following way
proceed as follows:
1- From the database management section on your host or xampp/wamp, first find the database of your program and select it.
2- Select the "settings" table and execute the following script
INSERT INTO `settings` (`variable`, `value`) VALUES
('doctor_brown', '{\"code_bravo\":\"1\",\"time_check\":\"1\",\"code_adam\":\"1\",\"dr_firestone\":\"1\"}\r\n'),
('web_doctor_brown', '{\"code_bravo\":\"1\",\"time_check\":\"1\",\"code_adam\":\"1\",\"dr_firestone\":\"1\"}\r\n'),
('admin_app_doctor_brown', '{\"code_bravo\":\"1\",\"time_check\":\"1\",\"code_adam\":\"1\",\"dr_firestone\":\"1\"}\r\n');
3- Do not use the system menu - "system registration" under any circumstances, as there is a possibility of disabling the program
After nulling the app with the above method , it say to you "Your system is successfully registered with us! Enjoy selling online!"
4- Probably, this method will also work on "eShop - Multi Vendor eCommerce App & eCommerce Vendor Marketplace Flutter App" too.
5- Go and relax