Paste the code to you BuildYourSite website’s HTML field.
Next, go to your BuildYourSite website and find the HTML field. It is most likely in the form of an HTML/Code widget or module which you can find on BuildYourSite’s dashboard. Add it to your page, and paste the code you’ve copied before to the HTML field. Save and update, and that’s it, you should have Common Ninja’s Telegram Chat widget on your BuildYourSite website.