For ebay registration, ebay will call you and say a code in the phone, then you input the code into ebay registration page of your computer. In this way, google voice phone works.
For Amazon registration, Amazon will create a code in the registration page and ask you input the code into the phone when they call you. I input the code into my phone which connect with google voice phone, it seems that google voice phone can't transfer the code I input in my phone into Amazon.
I wonder how to solve this issue
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