The apps will have a feature to open the VE from the app, and if the user is not logged in, it will prompt a dialog about creating an account or logging in.

If the user taps Log in and clicks on Log in, it will open the return link that does not include the veaction=edit and returntoapp=1 parameters from the app, which will trigger the deeplink mechanism to open the app.

Request
Make sure that when redirecting from the login screen, the URL keeps the additional parameters such as veaction=edit and returntoapp=1...etc.

The example link that opens from the app:
https://en.wikipedia.org/w/index.php?title=Neo_Ta_Memes&veaction=edit&section=0&returntoapp=1