Hello! My name is*****I am a certified computer professional who will assist you.
Please tell me what exactly happens when you start Firefox? If you receive an error message, please type it here.
I needed more information about the problem to be able to provide you an answer. That is why I asked you to let me know what exactly happened when you start Firefox and if there were any error messages. You didn't respond at all, so I couldn't provide any answer.
I will transfer you request for a refund to the Customer Service.