Feelworld W1000H wireless transmitter and ATEM mini pro ISO.

Does anyone have any experience using the Feelworld W1000H wireless transmitter system and the ATEM mini pros? When I connect the receiver to the ATEM I get audio but no video. If I connect the same configuration to a HDMI monitor I get both audio and video. I know from experience the inputs (HDMI) on the ATEM are quirky, but my Hollyland 400pro and Lilliput WS-500 both work fine in the same configuration (1080p60).

Any help would be much appreciated.

Quick Update:
Possible work around - W1000H is an RGB signal which I knew, but the support folks at FeelWorld asked me to try input one as a possible resolution which of course came up with the expected pink and green color shift, however once I re-tried inputs 2-4 the signal showed fine (previously there was no video only audio). No idea why this happened in the first place, but hopefully I can use this work around if it happens again.