Was able to add Hyvor Talk using the custom JavaScript below. But as salis has mentioned above, it is pretty bloated. They also no longer have a free plan. I was just lucky that I signed up for one before they changed their plans. So I managed to keep my free plan.
// src: https://talk.hyvor.com/web-api/embed
var HYVOR_TALK_WEBSITE = 0000; // REPLACE WITH YOUR 4 DIGITS
var HYVOR_TALK_CONFIG = {
url: false,
id: false
};
var hyvorTalkDiv = '<div id="hyvor-talk-view"></div>'
if (document.getElementById("post-body")) {
document.getElementsByTagName("article")[0].insertAdjacentHTML('beforeend', hyvorTalkDiv);
}
