Im getting downloads of 1kb with Dropapk and Uploadrar when using premium. I get full downloads when using direct.
We are aware of the issue of users getting a <1kb file instead of the correct file and are working on it. The issue is on the filehost Dropapk's side and they are promising to fix it.
EDIT: please see here: viewtopic.php?p=8368660#8368660 for why an issue on one filehost can cause issues on another filehost that is used as a mirror.