Links broken?

I just installed wordpress and all was working well. i was in settings page, there is place for 21 urls. i think i changed the top one to https://www.lindersflowers.com/blog. (please don’t ask why)

when i try the main site, https://www.lindersflowers.com i get the content with all images and css disables.

When i try to access the admin page again thru https://www.lindersflowers.com/wp-admin it reroutes to a long url something like https://www.lindersflowers.com/blog/wp-login…….

How can i correct this?