I've made a trade, my goods are gone, and I got nothing in return...

I've made a trade, my goods are gone, and I got nothing in return...it happened today ... before 12:am (I think):
- the sale was 400 beers for 63-67 coins....no email, beers are gone and nothing in return!

Then again a few minutes ago something happened, game got still and I had to log off and log in again, and all my trades didn't go as planned, but this time I don't remember the details, because I've made a few trades...no emails.

What can be done about this? Why can't I take back a trade when I didn't receive an email or answer after fer minutes/hours? Whats the point of trading if this happens (even if it's a beta ;))?


EDIT: a minute ago, mail appeared and the 400 beears are back!