You can try turning on Request for Delivery Reports from profile page to see if it works. This will only request the delivery report. It is your network operator's decision to fulfill it or not.
Sent, Failed and Delivered status are given by your network operator. If you can send SMS or MMS normally, then you should be able to do it with this app, because all SMS related app on the phone uses the same system function to send messages. Make sure your SIM plan allows you to send SMS or MMS. Default messaging allows you to send RCS messages too, so make sure you don't confuse it with SMS or MMS.