I cannot pay Turbotax because I am not being able to enter my personal information in the payment section. What should I do?

Are you trying to enter a foreign address in the credit card section?'

You must have a U.S. billing address (and U.S. credit card) to pay TurboTax fees by credit card.

Why is this happening? It is not a TurboTax limitation. U.S. banks require the card's billing address in order to validate on-line charges, and the databases they use for this purpose do not include foreign addresses (too many possible formats). Also, a great deal of on-line credit card fraud emanates from foreign countries; requiring a valid U.S. billing address reduces the chance that someone overseas is stealing your card number. 

There are a few ways around this limitation.  

If you have a refund coming, you can use it to pay your TurboTax fees - this is a rather expensive option because of the service charge.  

The only other option is to pay for your TurboTax with someone else's U.S. credit card (close relative or close friend), one with a U.S. billing address. The payment process is completely separate from the tax return preparation, so using a card with a different name & address won't be a problem