For the benefit of the rest of the community, can you kindly elaborate on what you mean by the App does not work?
Do you get an error message? Do you have any screenshots displaying what the App shows when you try to open it?
Can you click on this link: https://community.agl.com.au/t5/user/viewprofilepage/user-id/3830
Provide your AGL Account number and address so that the AGL Moderator can take a look at this for you.