Hi, Siavahda
Maybe try Libby (libbyapp.com)
To install the Libby app on your PocketBook e-reader, you'll need to add a third-party library to your device. You can do this by going to the "Settings" menu on your PocketBook, selecting "Manage My Devices" and then clicking on "Add a new library". Then, select "Install from internet" and enter the URL for the Libby app:
https://libby.pocketbook.net. Follow the prompts to install the app, and you'll be able to access your library and borrow e-books from your local library.