Your subscription payment works on a prepaid basis, meaning you pay before using the service.
Check what happens to your billing when you resume your plan by selecting the version that matches your home screen.
Version A
The billing date is postponed upon resuming a plan based on how long you have had the plan paused.
Example: If the billing date is the 10th of each month, and the plan is paused for 15 days, the new payment date upon reactivation will be the 25th.
Version B
When you resume the plan, a discount for the paused days is applied to your next payment.