HDMI Video Capture Card support for Virtual Production

Hello Greg, I have purchased the DigitNow capture card according to the suggestions from your YouTube channel, the Capture card only works in OBS in 1080P only not 4k and with unreal 4 or 5 it doesn’t seem to support on any resolution. am I missing something or doing something wrong? I am using Sony A7SII to stream the video directly to UE to begin with VP. could you suggest an alternative that would best work with UE. I read the whole thread and only Elgato CamLink4K seems to have the higher vote, however will the Elgato stream 4k to the engine or does it only stream 1080p?