I have a Wix site. Would love to use tawk.to but you can't attach the chat window to the bottom of the page.
Your solution was to create a fixed footer and attach it to that as shown on this website: http://support5412.wixsite.com/tawktest
However the app Tidio Chat affixes itself to the bottom of the page without the need for a fixed footer (see my website www.cleanthemuk.com). You guys should figure out what they're doing and copy it and then I'll use your chat application.