Firefox's enhanced tracking protection will block the API call that checks reddit. Unfortunately, unless Disconnect removes reddit from their blocklist, there's no workaround here except to turn off enhanced tracking protection if you would like to use this extension. More details can be found here: https://stackoverflow.com/questions/69184777/how-to-pull-reddit-data-from-their-public-endpoint-when-using-private-browsing/69185304#69185304

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