I was approved for tax advance and then i received email from turbo tax debit card stating I was not approved. Why?

Same thing with me and no one can seem to tell me why. 

You should receive an email from First Century Bank NA  explaining why you weren’t eligible for the Refund Advance. If you did not receive it, you may want to check your spam folder. 

Please see the below TurboTax FAQ for additional information on the Refund Advance Application Process:

https://ttlc.intuit.com/community/refunds/help/about-the-refund-advance-application-process/00/25557