Dual Subtitles & Shadowingfor Netflix

DUAL SUBTITLES & SHADOWING

A little help, when you need it

Getting started, VIP codes and devices, billing and data requests.

Last updated: 2026-10-01

Getting started

Install the extension from its official Chrome Web Store listing. Open a Netflix title and choose your primary and secondary subtitle languages — bilingual subtitles need no sign-in.

VIP features can be tried free for 15 minutes a day — click Start trial in the extension. For unlimited use, open Membership and enter your VIP code.

Common questions

  • New computer or reinstalled the extension? Open Membership on the new device and enter the same VIP code.
  • Lost your VIP code? Email us with your purchase record. After checking it, we can stop the old code from adding devices and issue you a new one.
  • Told that two devices are already registered? Confirm to replace the device you used least recently. Each VIP allows 3 replacements per 365 days; if you reach the limit, contact us.
  • Why does the trial keep counting while paused? The daily trial is 15 minutes of wall-clock time from when you click Start trial, so pausing, switching tabs or closing the page does not stop it. You can start once per day (local time).

If something is not working

Include your extension version, browser version and a short description of the issue. Screenshots are helpful when they do not contain private information.

Do not send passwords, API keys, authentication tokens or complete payment details. Only share your VIP code when we ask for it to verify a request.

Billing, cancellation and refunds

Online purchase is not open yet, so there is nothing to cancel or refund at present. Once it opens, you will be able to manage or cancel your subscription in Membership and request a full refund within 3 days of a payment. See the Refund policy and Terms of sale.

Devices and data

In Membership you can see the devices registered to your VIP, move VIP use to this device, export data, and unlink this device and clear its data. The extension cannot remove the other device; adding a new device when two are registered replaces the least recently used one after you confirm.

For privacy requests, write to privacy@dooo5.com.

Response time

Email support@dooo5.com. We reply within 3 business days.

Contact

Operator: Dooo5 (individual developer)

Support: support@dooo5.com

Privacy: privacy@dooo5.com