Hi @toccamonium,
sorry for your confusion and thank you for the question. We have introduced this option in the last version to avoid breaking the form if no page is selected to manage your submissions from the frontend.
Many people run into trouble by not selecting an attached page under edit submissions. Now we created a global setting for the page and you can overwrite it in the form. It makes sure all functions work and we have a global edit submissions page as fall back.
To make sure that everyone has selected the new general edit submissions page, we created the admin notice.
I hope this makes sense to you. Please let me know if you have any feedback ort question left. I like to help.
Greetings,
Sven