First, I’m new to wordpress, so this may be a very basic question. I started setting up the site and page IDs were part of the URL. Later made the switch to page name.
hi John,
I think you set it from dashboard -> reading -> permalink
from there you can set it to page id or post id you want.
Yes after you set it to page name then it will not display in page_id so it gets error so if you want it again page id then you may change the permalink as default.