You want to use Whatsapp in your Firefox browser? No problem, open "web.whatsapp.com" in a new Firefox tab and scan the QR code you will be shown with the Whatsapp app! Did I understand your issue correctly?

Hi,

This forum is intended to help users with Mozilla products, such as Firefox. As a moderator, I'm going to mark this thread as off-topic and lock the thread since it is not a subject covered in the support forum. Please see Mozilla Support rules and guidelines.