Support
We typically reply within 1–2 business days.
Email support
For all questions — bugs, license issues, refunds, or general help.
support@duijiaozhen.comCommon questions
Most answers about privacy, scope, payments, and platform support live on the FAQ.
Browse FAQ →Diagnostics
If you report a bug from the app, you can export a diagnostic bundle and attach it yourself. The export redacts local paths and does not include videos.
Send diagnostic report →About this product
Video Tagger is published by 上海对角阵科技有限公司, trading as Duijiaozhen at duijiaozhen.com. Direct purchases are processed by Paddle as Merchant of Record; Mac App Store purchases are processed by Apple. For privacy, terms, and refund policy, see the Privacy Policy, Terms / EULA, and Refund Policy.