Why are there more than one Pre-Order button showing at the products page?

This is most likely due to another Pre-Order app was installed prior to installing the Pre-Order Manager. To resolve this issue you can contact the app owner for a clean removal of the app.

This is most likely due to another Pre-Order app was installed prior to installing the Pre-Order Manager. To resolve this issue you can contact the app owner for a clean removal of the app. Alternatively you can contact our support team and we can assist accordingly.