You can extend a trial through the Developer Center or API. Once the trial extension is granted, account admins will see the updated expiration date in the Apps section of the Admin tab.

How to extend a trial

Developer center

Open the Developer Center.
Click Monetization in the left-side menu.
Select Trials to extend a trial plan.
Enter the Account slug (found in your webhooks or by querying the account through the API).
Select the plan for which you want to extend the trial.
Choose the extension duration (up to 365 days).
Click Set.

API

To extend up to five trials at a time via the API, use the batch_extend_trial_period mutation:

mutation {
  batch_extend_trial_period (account_slugs: ["test", "monday"], app_id: 12345678, plan_id: "Plan_1", duration_in_days: 21) {
    details {
      account_slug
      reason
      success
    }
    reason
    success
  }
}

Troubleshooting

If you receive an error while attempting to extend a trial, refer to the table below for common issues:

Error message	Issue
Failed to extend trial - Check your inputs	User entered invalid input (e.g. exceeding 365 days)
Failed to extend trial - Invalid account details	Account with the provided ID doesn’t exist
Failed to extend trial - Account missing monetized install of application	The app is not installed on the account
Failed to extend trial - Existing app subscription	Account already purchased a subscription
Failed to extend trial - User cannot extend trials	Granting user can't provide trial extensions