ArrowChat

There is a plugin included with WordPress that causes emoji Unicode to be converted to HTML. This makes emojis look like HTML code in ArrowChat. There is no way to disable this.

Fortunately, there is a plugin called "Emoji Settings" that allows you to control it.

You can find it here: https://wordpress.org/plugins/emoji-settings/

Once you install the plugin, go to Settings > Writing > Uncheck "Enable text to emoji conversion"

This will fix your ArrowChat emojis!