Sign In to your FieldLab Account at the link below.
If you don't have an account, yet, create one (it's fast, and free).
Go to the Devices section
Once you're signed in, select the link titled "Devices"
If you don’t see your device, it is because it hasn't been registered, yet. Every one of your devices and their corresponding calibration certificates will be visible as soon as you register them. Instructions for registering are here: Register your FieldLab Device.