Can't get 6 month of Apple Music that came with AirPods 3rd gen

Try this link:

https://offers.applemusic.apple/six-month-offer#redeem

Note that this offer is for new subscribers. If you already have a subscription or have use a free trial in the last 3 years, then you are not eligible.

Hi,

I cannot use the offer for 6 months of apple music even though I bought new AirPods pro last week. I tried the link above from @javaliga but I see only one month fee trail. Do you know the reason?

Thanks!