"My Windows Desktop program doesn't have a spot to enter the EIN"
Mine does (Deluxe). Do you need to update?
I'll note that all that is happening is that step-by-step mode is indicating that review is needed. Lack of an EIN does not generate any errors during Smart Check. So TurboTax does not actually seem to require the EIN as I previously stated, but just complains a bit if you don't provide it.
