XBOX live 1 month gold trial doesn't appear on XBOX one

The free month of Xbox Live gold can be applied from the account creation process if you are making a new account.

Or

If you already have a Microsoft account and don’t have an active Xbox Live Gold paid subscription, you may be able to sign up for an Xbox Live Gold one-month free trial subscription.

Here’s how to sign up:

1. Sign in to the Subscriptions page with your Microsoft account.
2. If you’re eligible for a free trial, you’ll see Gold – 1 Month FREE Trial as a subscription offering. Select Gold – 1 Month FREE Trial, and then select Next.
3. If prompted, add a payment option to your account. If you already have a payment option on file, you can use that.

Important At the end of the first (free) month, your trial subscription automatically turns into a paid Xbox Live Gold subscription that renews monthly by default. The paid Xbox Live Gold subscription will renew to the payment option you
added to your account.

If you don’t want the Xbox Live Gold one-month free trial subscription to renew, you must cancel it. See “How to cancel an Xbox Live Gold trial subscription,” below.

For more info go
HERE.

Hello,

the one month free trial doesn't gives you access to all xbox live features, only a gold membership offers that

When you claim the free trial month with gold from your console it doesn't appears for the trial membership doesn't offers all the perks of a paid gold membership.

Did you enter the code from the 1 month trial for Xbox Live Gold?

Each new xbox comes with 3 x 1 month free trials of the gold service. The only way to access this is to create a brand new account on the console. When the option to join live shows up you would choose NO. Then the free trial offer would appear.