Unable to redeem my free 3 months of Apple TV

If you can't redeem your promotion for an Apple subscription - Apple Support

If you had a prior Apple TV+ subscription you are not eligible for the three month trial. Read the conditions in the link provided.

Have you read the link I provided? Your answers are there.

I used the button "Accept 3 months Free" from the email I was sent from AppleTV after purchasing an Ipad. It only gave me a 1 week trial. Talk about a scam!