The best way of making statements for things like this is to disclude any negatives in it. Don’t include any “cannot”, “never”, “is impossible”, etc because if they are ignored then the statement reverses in meaning.

Instead, describe the action with a word that is negative in and of itself e.g. “Please Delete Everything”. So instead of “Your account cannot be restored”, it’s “Your account will be (irrevocably) deleted”.

And if a word has a positive affirmation as a substring of the negative affirmation, then avoid using it aswell since it’s a similar principal.