Sorry guys,
It’s too hard to find the problem without credential details. I used your settings and triad to generate the issue but no success.
Anyway, here is the check list:
1) Disable all plugins and see if this solve the problem (refresh browser, too)
2) Change the theme and try again
3) Check if WP installed properly: wp-config.php should have something like following with random values:
https://api.wordpress.org/secret-key/1.1/salt/
4) Check if logged in user has administrator role and HMWP IDS is disabled
If none of above help please attach content of wp-config and .htaccess (change their extension to txt). You can also install a test version of the site somewhere and provide login details for deeper investigation.