nav urls not resolving

I had the blog working fine using an ip number. Then I pointed our domain, reevuit.com, to the site and edited siteurl and home. The site comes up fine using reevuit.com but now the nav links aren’t working.

The nav link looks like reevuit.com/why/ but that gives a 404. I swear I only changed siteurl and home. They are https://reevuit.com/wordpress and https://reevuit.com. I tried them with and without trailing slashes.

What can I do to debug this? I can’t figure out how the code resolves urls. Even though I know PHP I couldn’t track down how the routing works.

Any help would be appreciated.