TurboTax does not use email for customer support.

Your other question was already answered a few minutes after you posted it.    It tells you how to reach customer support by phone to arrange for a program download.   You can continue the discussion there, if needed.

https://ttlc.intuit.com/questions/4716016-bought-cd-from-costco-but-do-not-have-cd-drive-how-to-get-...