We use the following app: JW Library from Google Play here at: https://goo.gl/w4RlnU
All of the multimedia and book donwloads within the app are blocked by ABP. This happens regardless of whether the 'Aceptable Ads' or the 'Filtering' options are selected. This means we have to change the WiFi configuration every time.
There is no advertising in this app whatsoever so perhaps the download URLs for the content are being blocked by mistake?
Please help. Thanks.