In this document, "It" refers the Cloud Firewall addon/extension, and "We" or "Us" refers the developer(s) of this addon.
Cloud Firewall addon does not send your data to any server about its users. It does not (and technically cannot - see sourcecode at NotABug at https://notabug.org/nipos/cloud-firewall ) send any data back to any central server. It stores "Cache", "stats", and other settings in user's local offline storage - and not send to any server anywhere. We do not wish to ever receive your data.
When you install any addon/extension, Mozilla addons.mozilla.org merely tracks the "number of installations" of any addon. Updates to this extension/addon will be provided on the means provided by browser vendor Mozilla via their respective update methods.