digital editions on my iphone isn't the same as on my laptop?

I use digital editins on my laptop to organize my e-books and the download e-books to my e-reader.

i downloaded the app of digital editions to my iphone this morning.

but i just see a few titels on my iphone-app.

and when i open the e-book, i see ""W_ADEPT_CORE_EXPIRED".

the time and timezone of my laptop, e-reader and iphone are the same.

what should i do to synchronise digital editions on my laptop and on my iphone?