Dahua DH-XVR54 L-I2 Series User Manual page 62

Reset the password.
QR code

Follow the on-screen instructions to get the security code in your reserved email address.
In the Security Code box, enter the security code.
You can get the security code twice by scanning the same QR code. If you need to

get the security code once again, refresh the page.
Use the security code received in your email box to reset the password within 24

hours; otherwise the security code becomes invalid.
App

Select QR Code for Binding Device as Reset Mode, and then follow the on-screen
instructions to get the security code on your DMSS app. In the Security Code box, enter
the security code.
Security questions

For Reset Mode, select Security Questions.
1)
If you did not configure the security questions before, in the Reset Type list, there will be
no Security Questions.
In the Answer box, enter the correct answers.
2)
Reset mode (app)
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User's Manual