My first guess would be that you may need to adjust the size of the envelope. I find that templates often working better with certain printers than they do with others.
While I don't know the reason behind this happening, I can tell you that I've been there too and tried with no avail to figure out what the problem was. The solution that I came up with was just to manually move the text box containing the return address to the right about a half inch and re-saving the template like that.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.