Hi!
The custom box contains only /%postname%/
. This part is ok I think.
If I change https://wwww.domain.com
to https://domain.com
in Settings > General > WordPress Address (URL) & Site Address (URL), I have the opposite problem: protected pages will work with domain.com and not https://www.domain.com.
I would like protected pages to work with both https://www.domain.com and domain.com.