[Mobhack]

Secure PBEM must be played on the same machine.

Secure PBEM stores it's data on a database on the originating machine and not in the savegame file so it has to be played on the machine you started the session on. Otherwise you will get garbage reported as you have seen here.

If you need to play with someone who uses multiple machines for some reason, you will have to use regular PBEM.

if you require secure PBEM (say for a competition game) then both players must each choose one machine for the game and stick to that box for the secure game. So if your opponent is travelling and uses his laptop when away, he should have started the secure match on that one and not say, swapped back and forwards with his home machine and his laptop. Or use his home machine, and not play turns on his laptop when away from home.