The 1002 error code relates to having a poor internet connection at the time of downloading. Are you using a wifi or cellular connection to download the magazine? We do recommend downloading while you have access to a strong wifi connection due to the size of some issues
Make sure you're connected to a strong wifi network and follow these instructions to try to get download working again:
1. In the Library tab, tap Edit in the top left corner and tap the X which appears.
2. Click on the issue to begin the download again.