Looks like your history is currently empty.
Open any series in the reader and you will see it here.
You will also have an option to erase your history.
You can synchronize your reading history and pinned galleries across different devices. This is done using a third-party data storage service (which you can also host yourself to have full control over your data).
To get started, create an account with any remotestorage provider. We recommend 5apps since it's free.
Once you've created an account (eg. user@5apps.com), log in below: