Once you click on (+) and then on the "Read Later" link; you can click on "Offline Links" to get a list of all pages saved for reading later. These are stored locally and accessible even without an internet connection.

The "Offline Links" is available only after Tranquility Reader has processed a page. So, you will first have process some page first before you can access "Offline Links" saved in earlier sessions. This is a limitation of the current design. In future releases, I will try to add more user friendly ways to access the offline content without needing to run Tranquility on some page first.

Thank you for the review. The extension is being worked on -- please send email to the support page (or open a ticket on the github page for this extension) if you find any problems and I will try to address the problem.