Just upgraded in-app to Premium. Doesn't look like any of the Premium features are active. Unable to email task to project and don't even see the feature.
Your account is Premium on our end, please sign out and back in again to make sure it's refreshed. Though, you will need to go to the web version, right click a project "email tasks to this project" and make sure any email address' you are using are added to the accepted list.