The d6 app uses a one-time PIN (OTP) sent to your phone or email to verify your identity. If you are having trouble receiving or using your OTP, follow these steps.
Check spam → Wait for SMS → Use latest OTP → Clear app data if needed
Check your spam or junk folder if you requested an email OTP.
Wait a few minutes — SMS messages can sometimes be delayed.
Ensure you have signal — a weak network connection can delay SMS delivery.
Request a new OTP after the countdown timer ends.
If you use a workplace email or custom domain, your IT department may be blocking the OTP emails. Try using a personal email address or phone number instead.
If you requested multiple OTPs, only the most recent code will work. Earlier codes are automatically invalidated. Also check that no extra spaces were copied when pasting the code.
The countdown at the bottom of the OTP screen shows when you can request a new code — it does not indicate when your current code expires. Try entering the code you received even if the timer has ended.
OTPs remain valid for several minutes. The countdown timer on the screen is for requesting a new code, not for the expiry of your current code.
Currently, OTPs are only sent via SMS or email. Voice calls are not supported.
Clear the app's data (see our article on clearing app data), restart the app, and try again. If the problem persists, contact d6 support.
Last updated: March 2026 | Version 1.0