Amazon Affiliate Verification Error
I am trying to register with Amazon Affiliate Program and everything is going perfectly fine. But when I get to reach the verification stage where I need to input a phone number, an error message saying they can't proceed in the verification process. They can't reach my number. How is this even possible? Is using a mobile phone not allowed? Do they need a landline? I've been trying to register for like ages now.
Why is Amazon Affiliate Program behaving this way? Anyone who has the same experience?