Flashpoint/Godox Reciever / Trigger with Yongnuo 565EX?

[greybeard]

I just received a Flashpoint R2 Pro MarkII transmitter and a pr of Flashpoint R2 receivers. I'm wanting to pair them with 2 Yongnuo 565EX's. The setup works just fine in TTL with my Z-50 however, when I try it with my D850, the B channel is always out of sinc. Both flashes fire but picture only shoes the A channel firing? I have swapped out the B channel with a number of other flashes both Nikon and Godox using the R2 receivers and everything works fine with the D850? It's not anything I can't work around but it is baffling.