Is the "free" upgrade to Teramining automatical? Or do I have to do anything? If so, I don't find anything in the settings? 
Indeed, how do I go about upgrading?
You have to pick your upgrade path, it is not automagical!
Log into your account at https://virtualprocessingsolutions.com and pick the upgrade path you want.
Upgrades have been disabled until more equipment arrives. I will email Gigaminers when it is open again.
Best,
James