Https migrate Reauth and bug in general options

Have the problem or the bag in migrating from http to https.

In general options I removed protocol mention, so home url became //site.com.
Now I’m trying change it to https://site.com , but it is unchangeable. I have checked in DB – it’s setuped to https://site.com, but when I checked source code of sitepages it showed only //site.com

My main problem is in Reauth when enter my data in wp-login.php
This is my wp-config.php

define(‘FORCE_SSL_LOGIN’, true);
define(‘FORCE_SSL_ADMIN’, true);
$_SERVER[‘HTTPS’]=’on’;//preventing loop error

define(‘WP_HOME’,’https://site.com’);
define(‘WP_SITEURL’,’https://site.com’);
define(‘WP_DEBUG’, true); // no errors found