Is there something wrong with this?

[Wdll]

I asked him and he said a couple of things. He said he doesn't use the same slot for more than one pbem game and that he doesn't use any mods.
I will copy and paste what else he said so that I don't change anything (meaning) by mistake.

On a couple of occasions I haven't had the time to finish my turn in one go.
So I saved the game and continued it later.
I think that should explain it.
Anyways, I'm not cheating.
.....
One thing could explain it.
I once downloaded a mod for the Finnish OOB
I tried it, but I made a different folder for it.
So that one folder contains the default OOBs, and the other contains the same files, except for the Finnish OOB.
So one folder is named "game data" and the other is "game data_FIN" or something.
And when I wanted to play with the Finnish OOB, I renamed the folders like "game data" and "game data_default".
Now, when we started playing PBEM games, I returned the folders to their original names.
And I figured it should work.
However, I'm not an expert on how the game works, so it might've caused something.

We started playing a couple of months ago. I can't remember if I noticed this in every battle so far, but it has certainly appeared before.

So, what do you think?