Using HTTPS instead of insecure HTTP is the right and logical decision.

 

If you do not use encryption to connect to the MyChat WEB server, then all data will be transmitted publicly. For a server that is exposed to the internet, this is unacceptable. In addition, the security policies of Google and Apple explicitly require the use of secure connections for transferring files over the network, so if you will have users with phones connecting via the internet, you must configure HTTPS.

 

The certificate is given only for the domain, not for the IP address. You can use an existing certificate, free, or purchase one and connect it in the settings of MyChat WEB server. The port of the WEB server does not matter. Self-signed certificates cannot be used, the browser will immediately tell you about it.

 

You can also get a free Let's Encrypt certificate Let's Encrypt. MyChat Server contains a built-in support for this service.