They announced [1] back in June that the old extension will not be actively developed, and recommend everyone to move over to the new one.<p>[1] <a href="https:&#x2F;&#x2F;getpocket.com&#x2F;blog&#x2F;2015&#x2F;06&#x2F;pocket-is-now-built-into-firefox&#x2F;" rel="nofollow">https:&#x2F;&#x2F;getpocket.com&#x2F;blog&#x2F;2015&#x2F;06&#x2F;pocket-is-now-built-into-...</a>