This year I didn't place an order because I have enough seeds from last year to plant this year.
I suggest you follow MG on Facebook where they provide general updates like this one:
January 9 at 11:18am ·
We had technical difficulties today when we went live. The first automatic reply shut down our email. The first 100-300 emails did not get a reply. I am working on responding to those now.
If you place the order immediately after they publish their list as Brom did, then your order gets filled very soon. If this is not so, then it's all up in the air. However, in my view, if there is no reply or FB update within the first two week, it's worthwhile contacting them. I did so last year after a month of hearing nothing. They had lost my order, but then they filled in promptly. With a friend of mine the ordering dragged on until April, so he got about 25% of the order filled.
It amazes me how many internet problems they have. This is on top of the huge number of orders to be filled.