ATEM Program signal over fiber

I'm using a ATEM Production Studio 4K ..... and I'm sending the Program signal output over Fiber (500ft) into a movie theater for simulcast of our church services. The issue is the projector is green in tint and I have tried all the setting to correct it.
I'm sending 720p59.94 out.
I have sent signal direct from my computer and it is clear.
I've even which settings of the ATEM Program out to 1080.
any suggestions?

What are you using to convert the SDI out of your ATEM into fiber?
And what are you using on the projector end to take that fiber and input it into the projector?

Probably the projector is expecting a RGB signal... are you using HDMI on the projector side? Maybe you can change settings in the projector to YUV.