Update: New Promo link that offers 180 days subscription.
Visit this Promo page, enter your email address and grab 6 months subscription for free.
Note: The above promo page is in the German Language, it worked from here in India. If the link isn’t working, use a VPN with a German location.
For 120 days :
Visit this Promo page.
If the promo page displays “THIS OFFER IS NOT AVAILABLE IN YOUR REGION” message, then open the incognito window in your browser and visit the above link.
Also, you can try with a VPN by setting a virtual location like the USA.