Password app blank, on iPad

Assuming that the Passwords App has been added to the Dock...

With the Passwords App open to the blank page, swipe upwards from the bottom of the screen to expose the Dock - tap the Password App icon - then tap New Window. This should open another Passwords App window showing your stored Passwords. Finally, close the blank Passwords App window.

OK, so before going down a rabbit hole, what were the two previously suggested fixes?

I'm delighted to learn that the problem was identified and easily resolved with the provided guidance.

You have encountered an unresolved bug that may appear when opening the new Passwords App for the first time. After clearing the problem using the outlined steps, you are unlikely to experience recurrence.