Neither canonical URL nor 301 redirect from HTTP homepage

[Meishin]

How to force all traffic to HTTPS

After you’ve enabled SSL for your website, you’ll probably want to redirect all traffic on your website to the https version of your site. There are multiple ways to do that. Let’s compare some commonly used ways. Using script configuration Some scripts (including Wordpress) have a setting which allows you to set your website URL. By changing this URL from http://example.com to https://example.com, the script will probably redirect visitors to the https version of your site. Even if your script…

WordPress users special step: (You change the site URL to HTTPS one.)

Migrating WordPress – Advanced Administration Handbook | Developer.WordPress.org