Can't see website after upgrade

I’ve upgraded to 2.7.1 and although successful and I can login into the manager when you go to the website you see the login page instead of the live site. What do I need to change so you see the website?

First I would check what you see if you visit the site in Incognito mode in Chrome.

When you say that you see the login page can you confirm that it is the MODX Manager login, or is it your hosting providers login?

You could try deleting the contents of the /core/cache/ folder.

I would also check that the folder and file permissions are correct. Probably 755 for folders and 644 for files.

@andytough makes more sense, but also review the site Contexts base_url and site_url.