Your response to the CAPTCHA appears to be invalid. Please re-verify that you're not a robot below. (Reference ID: 4297007034746744434)

 I tryed to create a Steam account and all I got was the error message:

Your response to the CAPTCHA appears to be invalid. Please re-verify that you're not a robot below. (Reference ID: 4297007034746744434)

Then I tryed to use my Android phone and I still got the same error. I am pretty sure that I answered the object idenification carefully and correctly. But, still, got an error.

Finally, I switched to my iPhone and successfully created a Steam acount with only answering one object idenification question.

I think the problem is with the browser I have used. When I use Chrome, it did not work and when I used Safari, it worked.