You must have got a main zip file named â€œchatbull-pro-5.0.0.zipâ€� with your purchase. You will need to extract this file. Extracting this file will create a folder â€œchatbull-pro-5.0.0â€�.
Now, Go inside â€œchatbull-pro-5.0.0â€� and you will find a file “chatbull-mac-5.0.0.dmg”
Please install this file as your system follow process.