The following required page(s) are currently missing

Hello and Happy new year!
I have some trouble with Learn Press, after I finished to setup, I continue to receive this message: The following required page(s) are currently missing: Profila della pagina, Checkout Page.To ensure all functions work properly, please click here to create and set it up automatically.

I tried to create new pages and replace them, I tried to use different pages, I tried to reset it, but I always receive this message.

If I try to buy a course, I have empty cart. I guess it happens because the plugin can’t find my checkout and profile page.

Some idea how I can solve this problem?
Thanks for the time!
Regards,
Gianfranco

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