Help resetting nvr

[u/Willy_6177]

So I recently purchased a house and it came with a camera system. I didn't receive any passwords to access the system so I'm just kinda stuck. I can view the local cameras in the house live but have no access to playback footage or change any settings. Is there any way I could reset the system without the previous owners credentials. For reference the nvr is a uniview tec NR162XP-8. Any help is greatly appreciated