Kidozen Service as a backend

Hi ,

I have sample App which will display a button name "Auntheticate".Once I click on the button it will ask for the authenticaiton using kidozen Service.Does any one tried to integrate their Xamarin Forms App and used the avaialble services in docs.kidozen.com .The site is saying using their service we can write the less code for better productivity and we dont need to spend much time on wrting Email,SMS kind of service.Simply you can use their service i.e API.

If anyone used in their app please guide me how to do it.