Subscription ID is empty

Hi,

On the ‘ppress_added_plan_role_to_customer‘ hook,
$subscription->id is empty and $subscription->exists() return false.

Only if we add a payment from the administration.

add_action('ppress_added_plan_role_to_customer', 'add_plan_role_to_customer', 10, 1);

function add_plan_role_to_customer($subscription)
{
$subscription->exists(); // return false;
$subscription->id; // return 0;
}

Why?