If you open the ebook with the empty authorize its linked with this authorize. So you can it read only on Digital Edition. If you want used it on a other device must authorize Digital Edition with our Adobe ID and ask for a new Download without a authorize.
- quit Adobe Digital Editions.
- Navigate to /Users//Library/Application Support/Adobe/Digital Editions and drag the activation.dat file to the trash.
If you are using 10.7, see Access hidden library files | Mac OS 10.7 and later.
- Open Adobe Digital Editions and reauthorize.
- Open Adobe Digital Editions.
- Press Control+Shift+D to deauthorize Adobe Digital Editions.
- Select Erase Authorization.
- Click OK and quit Adobe Digital Editions.
Thank you Nanaky, it worked
You are welcome.