"Dahua" NVR cannot seek the recordings

I got a "dahua" off aliexpress. Looks the same but the top of it has no logo on it.

Anyway, it found my dahua camera fine, calls it "private" as the type, and it records great.

Problem is I was too lazy to set up motion detection or anything since a 3TB drive will last weeks and I only need at most a couple of days.

Now today, I have a parcel that says it arrived, but the box was empty. So for the first time I want to play it.

Delivery was supposed to be at 10:12, but I can only start play back from 10:00 and then wait and wait and wait. Or put it on faster play which is marginally faster.

Is there some setting I have missed to be able to seek the playback scrubber forwards and back? My old analog system could do that fine.

I probably won't have an answer for you, but for someone else to be able to help you, they will need a model number.