What happens to my existing customers if I change the price of a plan?

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If a subscription's underlying plan is edited at the site level, the changes will only impact new subscribers—your current subscribers remain grandfathered in at the plan terms they agreed to at time of subscription signup. To change the pricing of a grandfathered subscription, you can edit the price at the subscription level individually.

You cannot edit the billing period of a plan after it is created, to avoid existing subscriptions billing with the new period on their next invoice. We recommend creating a new plan if you wish to do this.