- paste your button code into the "Paste the code snippet here:" field
- select All pages under Add Code to Pages:
- under the drop down pick Load code on each new page.
- select Body - start under Place Code in:.
Click the HTML App to select it > from the pop-up menu, click Settings > under Mode,
choose HTML Code or Website address > enter the code from the bellow yellow box and click Update.
Besides this special way of adding code you also need to set the size of the HTML element/app which you are adding to fit your chat window since it will open in the same element as the button is. Therefore it should be set to at least 350x450 pixels but you might need even more to fit it nicely.
To attach the button to side of the website so it scrolls with it you must pin it. However you should remember that the element will occupy its space of 350x450 so if your side uses whole width for clickable elements then it is possible that the button's HTML element will be over the clickable element which will render it inusable pretty much.
Please note that we do not have any specific plugin to integrate with Wix and unfortunately this is the best how it could work due to the way how Wix works.