You've installed Dashly and now your site has our chat icon. In case you don't need chat, you can hide it:
Settings can be done in "General settings" section of admin panel:
Add this script into page document
dashly.onReady(function () { dashly.removeChat(); });
In case you want your own button to open chat, add a handler:
dashly.open()
This will open chat even if it is invisible.