@fathin-shihab the esteem app doesn't work on iPhone either, I just tested it. So probably there is some problem going on right know with the app. I searched to see if anyone else has written about this, but no. I think you are the first one to notice.
I hope it will be fixed soon.
Thanks for noticing and sharing with us.
There is indeed something going with the app. I also didn't see anyone writing about it. So I thought I was the only one. Apparently you and others have the same problem.