Jason Partyka

I agree with @shaneonabike that using the mappings is a good idea. This way it could be email or email_address or mail or anything desired.

Forgot to add my adjustment:

		if(!session_id() && !headers_sent() && (get_current_user_id() > 0)) {
			session_start();
			}
		}

Basically adding a check to see if a user is logged in.

Alternately, can just adjust this block of code to see how authentication is being requested:

	/**
	 * Start the php session inside the plugin because session is needed to store callback url.
	 */	 
	public function wp_cassify_session_start() {

		if(! session_id() ) {
			global $wp;
			$gateway_mode = WP_Cassify_Utils::wp_cassify_get_option( $this->wp_cassify_network_activated, 'wp_cassify_enable_gateway_mode' );
			if ($gateway_mode && $wp->request == "/login") {
				session_start();
			}
		}
	}