The following are precautions to be taken when purchasing a plan set up for a campaign.
・Since this is a discount for the first month, the regular plan amount will be applied for the second and subsequent months.
・Once a user has purchased the campaign, it will not be applied to the same plan a second time.
・If a campaign is set up for a plan to which you are already subscribed, it will not be applied even if you cancel that plan and subscribe to a new plan.