Google Play - Monthly subscription for my app is charged daily

I have an Android app published in Google Play that contains In-app subscriptions. I have a monthly and yearly subscription, I have configured it in the Developer console this way:

The issue is: when the user is going to subscribe, Google Play is displaying the payment gateway on this way:

Why it is saying they are charging $19.99 daily if the subscription is monthly?

This is the invoice subscribed users are receiving every day:

In my code, I am not defining anything related to the price, is this way:

inappbilling.subscribe(function (data) {
    $rootScope.logThis("inappbilling plugin - subscribe: " + JSON.stringify(data), "info", "inappbilling", "subscribe");
    subscriptionDone(data);
}, function (errorInfo) {
    $rootScope.logThis("inappbilling plugin ERROR - subscribe: " + JSON.stringify(errorInfo), "error", "inappbilling", "subscribe");
    subscriptionError(errorInfo);
}, subscriptionType.productId);

I'm only specifying the subscription id that is correct. How can I set payment to monhtly instead of daily?

Thanks!