The 4K X has me at a complete loss.

I'm tryna set up the 4K X, it's not working. I've seen 20 other reddit posts and I've done everything they recommended or tried. It's just not working. My display won't run through the capture card. I've quadruple checked my inputs like 3 times now. I've looked at the P5 settings 10 times. I've tweaked my monitor couple hundred times, I hardly know what I'm doing here, I've somehow made my P5 recognize my 1440p monitor as 4K. I've looked at 4k Utility and Elgato Studio settings. I'm honestly stumped. When I plug my P5 to my monitor, it works. As soon as it gets in relation with the card it doesn't show. It's scared of it, istg. I don't know what to do. I've been sitting here for hours. I need some typa help, anything. I had to buy this whole new card cause the HD 60 wouldn't let me play in 120hz while I stream.