HELP: No longer able to select Encoding Codec on E1 Outdoor POE

[user_988230359494835_988230359494835]

I own an E1 Outdoor POE camera connected to an NVS8 NVR. I was tweaking some options around Encoding Codec, and after switching to H264 on the Main stream now for some reason I can no longer change encoding codec. Basically when I switch to that camera on the NVRs Device - Stream menu the encoding codec no longer shows up and the dropdown menu is no longer available when I go to change stream settings for this camera. All my other cameras on the NVR still show the encoding codec dropdown.

Please help!