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- Can I change from a paid account to a free account？
- Can I delete my account？
- How do I change my password？
- How do I register my account？
- I forgot my password.
- Is there a term of validity for free accounts？
- Please tell me how to access and view My Page (account information confirmation page).
- Please tell me how to account cancellation.
- Please tell me how to add capacity.
- Please tell me how to change my e-mail address.
- Please tell me the payment method.
- What happens to the data when changing from a paid account to a free account？
- Login issues (since 2019-12-23)