Im filing with ebates coupon for free use of turbo tax and it won't let me choose free it only let's me pick standard or plus. How do I apply my free optio coupon?

You would have to talk to Ebates for assistance with anything on their website. However, if it’s a coupon or a discount, you would probably have to choose a paid version of TurboTax like Standard, because TurboTax Free is already Free. You can’t get a discount on something that already costs $0.