Currently, subscriptions are billed based on the customer’s signup date, which means each subscriber is billed on a different day of the month. Please consider adding the ability for site owners to set a specific day of the month (e.g., the 1st, 15th, etc.) for subscription billing, regardless of the subscriber’s signup date.
Even an optional toggle (e.g., “Bill all customers on [day] of the month”) would be a major improvement.