Initial slot payment/cancellation

• Payment method is immediately charged when the slots are purchased for the first time.
• Payment amount is equal to the prorated amount for the first partial month.
• Customers would only pay for the number of remaining days within the month in which the slots have been purchased for.
• This payment does not account for the number of days the slots have been utilized for that partial month. 

Recurring payment/cancellation

• After the slots have been purchased, the subscription is automatically renewed.
• After the initial payment, the next full month's charges will be automatically billed on the first day of the subsequent months.
• Cancelling slots would therefore have to be processed before the following month.

Additional slot(s) payment/cancellation

• If additional slots are purchased, the payment method is not immediately charged.
• Instead, the billing occurs on the first day of the following month.
• Payment amount is equal to the prorated amount of the first partial month plus the next full month's charges.
• Cancelling additional slots before the end of the first partial month would only charge for that partial month, on the first day of the following month.