Heal Shield is used to restore the main .htaccess file if unexpected changes occur or if it has been deleted. Under normal circumstances, it is usually not necessary.
Refresh Status is the manual button for synchronizing a site's status. For example, you can use it after fixing a problem directly in the Joomla backend. Instead of refreshing it manually, you can simply wait for the status heartbeat, which runs automatically every 30 minutes.
Regarding the /administrator logins: it seems that you have protected them with a token ( /administrator?token=letmein123 ). Please disable that so that /administrator is accessible normally. Instead, set up the additional password protection. HTProtect's 1-Click Login will automatically create a temporary exception for the current session.