But to summarise, because both API’s and live chat systems can’t be hosted here (you can host it else where, and embed it here, it just cant run on InfinityFree servers) certain key words, including “Chat” automatically redirect to a 403 page.
The other thing that might cause you a problem with your project, is that the security system will block any none-browser connections going to your site. Since InfinityFree is for hosting websites not API’s