Help and Contact
For sign-in, practice or purchase problems, email support@oknihongo.com.
01Account, purchase and App issues
Contact us about sign-in, listening, drafts, submission or missing access after purchase. Include your device, OS and App version, time, level, paper or question, and the steps taken. You may attach a redacted screenshot and error request ID. Do not send verification codes, passwords or full payment details.
02Corrections and community reports
Use the in-app correction option for question or explanation errors, or email the paper and question number. Report or block inappropriate notes and users from the note menu. If unavailable, email the content location. We review concerns under the community rules.
03Restore and refunds
Use Restore Purchases on My page and check that your device uses the original purchasing Apple account. Send transaction references if the issue persists. Apple refund requests go through reportaproblem.apple.com. Do not email full card details.
04Account deletion and privacy requests
Start JLPT deletion at My page / Delete account. It clears JLPT study and community data, retaining the shared sign-in identity and necessary exceptions. Email us about shared-identity deletion, access or correction. See the Privacy Policy for scope.
05Operator
Torres wang, Tokyo, Japan. Support, privacy and community appeals: support@oknihongo.com. Please email us rather than leaving contact details in public notes.