Calendar subcategories

I created a page with STYLE
“Details” with Button 2020, clicking other buttons with the months come out and clicking on the month brings up the list of the month. I doubled the 2020 key and renamed it 2021 but when I click on the month it goes in a loop showing me the same screen every time.

I think duplicating a component will only duplicate that component. It will not duplicate any of the underlying screens you set up. Link to Screen buttons will each have their own independent layouts. You would be better off creating these screens as lists. Maybe even tiles or cards if you want to have a similar look and feel of a button. If set up properly, adding years wouldn’t require you to have to touch the app editor. You could simply add the proper data in the sheet and it would show up in the app.