Ferdball:
Sorry I didn't see this earlier.
I signed up the free* (via rebate) juicebox premium as well.
It took a couple of weeks but I eventually got an email saying "Congratulations, you qualify for a free JuiceBox!".
I completed the next steps wrt monitoring.
I received a more recent email saying that they were ramping up production, but I'm still waiting for the go-ahead to buy.
In the meantime, I've gotten a 50A 240v outlet installed in my garage.