None for me, either. I never expected it in the pre-internet past, and don’t now.
To be honest I can’t imagine any stumbling block in a rule set big enough that I would bother emailing the writers about it. Most misunderstandings are usually cleared up by going back and re-reading the rules more carefully, and if that fails, just appealing to common sense.
I’ve other uses for my time than spending it in email exchanges over wargames rules.