Column not showing in the front end app

[Aditya_K1999]

I added a column by the name of " Alternate contact name " in the google sheet.

Now that column when I try to edit should be visible in the form. But it is not. It is visible if I am adding a new customer. But for an old customer if I edit the form it does not show, even if i fill data in it from the back end.

But in the preview section I can see it correctly but when I actually open the app, it is not working.