I can't reload my sheet

Hi ! Can someone help me with this problem ?

Here is the video screen of what’s happening.

Thank you for your help.

Very strange. Log out and log in again from Glideapps and from Google.

Thanks for your answer.

I did what you tell me to do but it still doesn’t work =(

Make a copy of your own app, copying the sheet as well, and try using that new one.
Ideally, clean up your Google Sheet before doing this. Delete blank rows and columns in all tabs.

Ok I’ll try this. But will the app stay on people’s phone if I copy it and I use the new one ?

The problem is that Glide is trying to tell you about columns that are missing in your spreadsheet, but the names of those columns are so long that it overflows the screen.

Could you share your app please?