This is an interesting project. I've been following FreedomBox for ages hoping it would end up as a good way to do this, but development has been slow. I do have some questions about the technical details:

1) Is email access provided through the Helm App, SMTP/IMAP, or is there a webmail interface as well? Can you use this device without a smartphone?

2) Which Linux distro is this based on?

3) What file system is used? Is it something like ZFS or BTRFS, which could protect against corruption? Since there seems to be only one drive, I assume there is no RAID-like redundancy included to protect against drive failure?

4) Where are the encrypted backups stored? What is the procedure for recovering them? I expect that the backup recovery keys are also stored offline on the flash drive?

5) How are software updates performed? Are they pushed from a managed system that you control, or does the device itself pull updates automatically on a schedule? How long will you guarantee software updates for? If you stop providing them, or are slow to patch a vulnerability, is there any way for the user to patch the device themselves? Local SSH access perhaps?

Lastly, a comment, please consider not overriding the scroll behaviour on your website. It may look slick when it works, but when it doesn't (as it doesn't on my Firefox), it totally breaks the website. In the case of your technology page, it is super-annoying, since the details I want are at the bottom, and I'm forced to watch the slideshow before I can see them.