Causes redirect loop

WP Fastest Cache adds 301 redirection rule into htaccess file and it causes redirect loop.

I have try this but it doesn’t work:
https://www.wpfastestcache.com/features/redirect-loop/

I have this code in my .htaccess for redirect visitors to https:

# Redirect visitors to https
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://www.wpfastestcache.com/$1 [L,R=301]
</IfModule>

*Not wpfastestcache.com – my website.