Second Hand DVR - Please Help

Hi All,

Question 1

This has probably been covered numerous times but I hope somebody can help me.

I purchased a HIK Vision DVR - Model: DS-7208HQHI-F2/N/A0820161118CCWR******WCVU from a user on eBay, it is password locked and the guy who sold it to me says he can't remember the password, I have also checked on Hik Connect and it says it is registered to another user, which I presume must be him!

My question is, if he can't remember the password then is the DVR not useable?

I...

Second Hand DVR - Please Help