I can’t sign in to the PC Viewer App.
Either the PC Viewer App is not available for your Social Media account or you have entered in the incorrect e-mail address.
Please double-check your registered e-mail address. Some devices change part of your e-mail address into capital letters by default, and you may have registered your e-mail address wrong.
Also, our PC App “BOOK☆WALKER for Windows/Mac” is not compatible with Social Media account sign-in (including Google) . Please link your e-mail address account in order to use the PC App.
* Please be noted that because we have decided to concentrate on offering and developing the Browser Viewer in the future, we will not be updating the PC App anymore. We may also stop distribution and usage of the PC App without prior notice due to OS update and/or security countermeasures. In this case, the Browser Viewer will become the only option to read eBooks on desktop PC, which requires a stable internet connection. Please see details on [Important Notice] Changes to the reading environment on desktop PC (Dec.20, 2017).