Hi Eduardo Avelar,
The lora-query is a CLI interface to register nodes/motes/mDots to the LoRa Network Server that is running on the Conduit.
The DeviceHQ is meant for the Conduits to register them self to it so that you can check the stats of the Conduits, scheduling download firmware to the Conduits ..etc..
It is not a remote LoRa NetWork Server cloud base where you can register your motes/mDots/nodes to it likes the Things network (lora network server cloud base).
https://www.thethingsnetwork.org/
Hopes to answer your questions.
Thanks,
BT