AWS Appstream 2.0 Configuration

Hello All -
I have followed the generic SAML steps but I continue to get a 400 error when trying to login using Duo + AWS Appstream 2.0

Does anyone have an idiots guide step by step. I feel it must be something small as SAML is working for general aws login, just can not for the life of me get it to work for appstream. I followed the steps provided on medium, I also followed the steps from aws (not duo specific)