Lorenzo90

Hello everyone and excuse me for my bad English ... I am Italian. I purchased the Dahua NVR model: DHI-NVR4108-P-4KS2 I changed the admin password but I lost the file where I saved it ... I tried the procedure with the qr code but even if the email is correct I don't receive the unlock key on the mail ... How can I reset the NVR if I have forgotten my password? I am attaching some info that could be useful: Anyone can help me to generate the temporary Master Password?