Can't claim free Apple TV+ for 1 year
I am from the Philippines. I just got my new notebook and I've received an email from Apple TV that I can claim Apple TV+ for a year. I clicked the link (Accept 1 year free) provided in the said email and it redirects to Apple TV app and it's not working, it only leads me to Apple TV homepage and shows a Try it free button with caption 7 days free, then ₱249/month. How can I claim the 1 year free Apple TV+? Thanks!
MacBook Air 13″, macOS 10.15