Yeah, because they're all just sitting around with their thumbs up their asses hitting "Refresh" on their email waiting for something to show up, right?
Maybe they haven't found the answer to your question yet - no point in responding if they can't tell you anything.
Maybe your email got intercepted by their spam filter.
The TOS350s are on the boat from China to the US. They've been sending out emails to all the people who pre-ordered the kit so they can place their actual order. That's 1701 emails they have to manually send because each one has to connect to individual user accounts in their system for the pre-order/order process to work properly. This is the first time they're doing anything like this so they want to monitor the process and make sure it works as intended.
They really ARE busy with bigger things right now - so shut up and wait a little longer.