Questions - WebThings

  1. In the section developer Where the option enable SSH comes up, through this terminal, what can i do apart from download add-ons.

Anything you would normally do in a Linux shell.

  1. In this same section appears view logs, my question is if I can access this data but without graphics, in other words like a database for export to another program.

The logs are stored in a plaintext file.

  1. Finally, can I use the zigbee the zogbee2mqtt CC2531 from dongle?

You can use that dongle with the Zigbee adapter, no need for zigbee2mqtt.