Hi! Just unpacked my Go and wanted to start the onboarding. Since I wanted to use my laptop to read the docs, etc. I typed the URL from the booklet (instead of scanning the QR code). The booklet says l.airgradient.net/go, however that leads to a 404 error. Turns out the go part has to be uppercase: l.airgradient.net/GO ← this works (and is what the QR is pointing to).
I’m guessing these have already been printed, etc. so can’t change that easily, but maybe you can at least ensure that the lowercase version (`l.airgradient.net/go``) works too?
Separately, I’d suggest not to use confusing characters like l in that URL. In most fonts it’s hard to tell the difference between l, |, I and 1 
So I’d suggest some other URL than one starting simply (why?) with “l.” cause it makes it hard to reliably type 