Cannot disable SMS in Android messenger

My problem: Since there is no native Facebook messaging (apart from the [telepaty-haze implementation](https://openrepos.net/content/nodevel/facebook-messenger-account) which unfortunately does not support group messages) I started using the Android Messenger app. The app works fine, message notifications arrive to my event screen. But SMS messages also appear in the android Messenger app. It is pretty annoying to get duplicate notifications on each of my text messages (one from the Sailfish messages app and one from the android app). I found an option in the android Messenger app to disable sms messages but this is what happens: 1. an android notification appears to "Choose another default SMS app in System Settings to stop sending SMS in Messenger - Go to settings" 2. I click on "Go to settings" and I get an ugly alert box saying: "Unsupported action - That action is not currently supported". How can I disable getting SMS messages in the Messenger app?