deleting read books from library

[tuppymob]

Having used ADE  to download from local library for a couple of years now I find having updated to version 4.5 the books which have expired and having deleted them from ADE library, keep coming back.  I have un-installed/re-installed  ADE programme 3 times without success.  Please can anyone help,  Thank you

[Nanaky]

Have you activate the sync Funktion of Digital Edition?

[tuppymob]

No, how does one find this to enable such function .

[Nanaky]

Start Digital Edition.

Check Library > Preferences.