|And what precisely do you think an "APP" is made out of?
If it's a third-party app, then you need to contact the person who wrote it for support.
If it's something you've written yourself, then you need to debug it yourself, or at least provide some relevant details here.
Nobody can help you fix a problem with an "app" we can't see running on a server we can't access.
"These people looked deep within my soul and assigned me a number based on the order in which I joined."