Payment of membership fees

• Q.
  I was unable to register for the live show in time so please refund me.
• Q.
  [Monthly membership course] Please tell me the payment methods available.
• Q.
  I get the message "You have reached the limit on the number of errors" and cannot register as a member.
• Q.
  I want to register using a credit card, but I get an error message.
• Q.
  [Monthly fee course] I would like to register using carrier payment, but it is not available.
• Q.
  [Monthly membership course] Can I change the payment method?
• Q.
  [Monthly membership course] Do I need to make payment every month?
• Q.
  [Monthly membership course] If I join in the middle of the month, will the payment be calculated on a pro rata basis?
• Q.
  [Monthly Membership Course] How can I check the status of my monthly payments?
• Q.
  [Monthly Membership Course] There has been a duplicate payment. Can I get a refund?
• Q.
  What are in-app purchases (App Store payments / Google Play payments)?
• Q.
  [Monthly Membership Course] When will my credit card be charged?
• Q.
  [Annual membership fee course] Please tell me the payment methods available.
• Q.
  [Annual fee course] Can I check or change my credit card information?
• Q.
  [Annual membership fee course] Please tell me how to pay at a convenience store.
• Q.
  [Annual membership fee course] Can I change the payment method?
• Q.
  [Annual membership course] I received an email from my credit card company one month before my membership expired informing me of the membership fee being deducted.