Some news ...
a) MP with 3 players: everything seems right ...
no disconnecting! just disconnect to check the reconnection. This one often works fine but sometimes there is a problem; so I have to work this part again. That said, I think I find the error in the sequence.
To avoid problems related to routers, firewalls and other security devices, we used Hamachi without any difficulty. (Recall that one player is still on satellite.)
b) play by email: clearly, there are problems of transmission of orders when we use the FoW or delayed orders ... These problems can also occur when we resume a game. I already identified the problem after spending several hours... and I am fixing this issue! I hope to finish quickly.
JMM