Ip camera using 2 channels on nvr

[DarknightD]

Hi , hopping to get an answer on my issue that I am facing
I have a dahua nvr 8 ch setup and have connected 6 dahua cameras and 1 vstarcam that is a 180 degree wide angle camera, during this setup the vstarcam was automatically taking ch7 and ch8 and showing the same image and if I delete any one of those duplicate channels the vstarcam would totally disappear and go up to the add camera section.
now I have added a 7th camera that is tp link and cannot add the vstarcam anymore , how can I fix this

 

[xonix]

Hi , hopping to get an answer on my issue that I am facing
I have a dahua nvr 8 ch setup and have connected 6 dahua cameras and 1 vstarcam that is a 180 degree wide angle camera, during this setup the vstarcam was automatically taking ch7 and ch8 and showing the same image and if I delete any one of those duplicate channels the vstarcam would totally disappear and go up to the add camera section.
now I have added a 7th camera that is tp link and cannot add the vstarcam anymore , how can I fix this

Check if the resolutions are within the max specs for 8 channels ?
https://us.dahuasecurity.com/wp-content/uploads/2023/01/Datasheet_N42B2P_Final.pdf