Quoted from PinballGlory:
I notice that in the schematics there were a relay called YY but I dont see it in my relayboard so i suspect that this i the relay thats missing
The USA schematic doesn't list a YY relay in the legend or where you show it near the transformer. You should be fine without it.
If the Replay Button doesn't activate the Replay Button relay (V), Inspect and diagnose this circuit with Alligator clip jumper wires
Example of a pinsider actually doing this https://pinside.com/pinball/forum/topic/red-baron-tech-question#post-5858156