The Web Solver License Manager Client extends the functionality of License Manager for WooCommerce. This plugin/framework is to be included inside the selling plugin for license activation/deactivation.
In the file /Includes/API/Manager.php, you are using the function esc_url_raw() for escaping, which "sanitizes a URL for database or redirect usage." Neither of those situations are happening when you are using it. You should use esc_url() instead.
In the file /Includes/API/Manager.php, you are using the function esc_url_raw() for escaping, which "sanitizes a URL for database or redirect usage." Neither of those situations are happening when you are using it. You should use esc_url() instead.