non-xpi addons only install in the first profile - e.g. Flashplayer | Firefox Support Forum | Mozilla Support
GitHub - xonel/Garmin-Forerunner-610-Extractor: Extracts FIT files from ANT-FS based sport watches such as Garmin Forerunner 60, 405CX, 310XT, 610 and 910XT.
GarminGraphs – Get this Extension for 🦊 Firefox (en-US)
Download Garmin Communicator Plugin for Windows 10/8/7 (Latest version 2020) - Downloads Guru
GarminGraphs – Get this Extension for 🦊 Firefox (en-US)