If you don't get an issue Alex send them an email from the contact form on the website.
They will make sure it is resent.
Some are getting lost in the post from what I have read but I know they are very helpful if you don't get your issues.
Just let them know and you will get a reply about it.

What country are you in by the way?
I think they stopped doing overseas mailing around 2-3 months ago because it costs them around $9 for each mag they send overseas, the advertising wouldn't come anywhere near to covering that for each mag.