Please make sure that your device is authorized with valid credentials.
Hi, Shreya, thanks for the prompt answer. My compuer is authorized as per my ADE website, but it still won't let me download ebooks, with a message that says " check activation", which I don't know how to do.I need information on how to check activation.
You can de-authorize ADE as "Control+Shift+D" for windows/ "command+ shift+d" for mac, and authorize ADE through menu option (Help -> authorize computer) again with same credentials.
hope this works !