Shopify GraphiQL App - querying subscriptionContracts

I’m trying to change the renewal date of all my subscriptions to the 21st of each month.

When querying the subscriptionContracts it says I do not have any contracts:

While there are 4 active subscriptions:

I am using this code:

{
  subscriptionContracts(first: 10) {
    edges {
      node {
        id
        status
        nextBillingDate
      }
    }
  }
}

I gave Shopify GraphiQL App all possible rights already.

Who can help me please?

Were you able to find a workaround for this?