Hi Mat, you can enable server storage, so it's no longer just stored locally in the add-on by going to relay.firefox.com, clicking on the account icon in the top right corner, then settings, and toggle on "Allow ⁨Relay⁩ to collect data showing the sites on which your aliases are created and used." This will now store the alias names on the relay servers syncing across devices. Let us know if that works for you!