I have a very basic website
https://myappname.example with only a home page that allows users to go and download my app from Apple store or Google play.
I have a use case when user can click on dynamic link. For example:
12343432 is a PostId. Today what happen is that this shows a 404 error because this page does not exist.
When someone tries to open this link, instead of the standard 404 page error a page, I would like to show a custom 404 page with the id in the middle and the user can click to copy the id to the clipboard to be used after inside the mobile app. Is this possible? If yes, can someone help with example?