I hope this video helps you resolve HDMI issues with the Z Cam E2 camera and the Zhiyun Crane 2 gimbal.
You can find the items I'm using in the following links...
Kework 20cm FPV HDMI Slim Flat Cable
https://www.amazon.com/gp/product/B07...
UGREEN 2 Pack HDMI Coupler 4K
https://www.amazon.com/gp/product/B00...