Doesn’t redirect with www in the url

Hi,

i am using the plugin to redirect my homepage to the mobile version, which works greatly for the url https://eisenreich-riegel.de

Unfortunately, it doens’t work for the url https://www.eisenreich-riegel.de

My settings are:

Want Tablets Redirected? No
Redirect Mobile to One URL? No
Redirect All Mobile to URL None

Redirect Homepage if displays blog posts? No
Redirect Front Blog Page URL None

I am using both WP Fastet Cache and W3 Total Cache. I added the rejectable User agents in the page cache of W3 Total Cache.

The redirected url is https://www.eisenreich-riegel.de/mobile
Leaving the www out of the URL didn’t change anything.

It would be cool if you could find a solution, that would make the plugin really perfect!

Best regards