So you have read this TurboTax FAQ and satisfy all the conditions.

Is it possible that you don't have any earned income? You have to have at least $2,500 of earned income (like W-2 or Schedule C) in order to get the credit?

I indeed have read that FAQ and have earned income well over the minimum 2500 and we'll under the max 200000. But it's not from a W2 as I live in Spain and have a foreign employer. That should not matter unless TurboTax has a bug.

I don't actually pay any tax due to the Foreign Earned Income Deduction, but I believe I should still see the CTC listed as a valid deduction in TurboTax.

There's another clause which allows people who don't owe any tax to still get a portion of the CTC as a refund, which is my goal. Other Americans I know are able to get this benefit.

Thanks for chiming in and I look forward to any ideas. 

Oh, that's not what I wanted to hear. Thanks for the information.

Are you paying income tax to Spain?

If so, you might want to 'test out' the results if you DON'T use the Foreign Earned Income Exclusion but use the Foreign Tax Credit instead.  

That's a good idea. Yes, as an employee of a Spanish company I pay standard local income tax.