Ad any other service on the Internet, we are aware that filehosters rapidly detect when their services are being abused, as per each measures.
We have detected the Mega refuses to download when a 5 GB limit is reached. Unfortunately, that is measured by IP, so if other users on our service has been downloading recently, you’ll see an “empty” download (We will try to detect and propagate errors so it’s clearer on each case).
While this is annoying, we don’t want to breach the terms & conditions of other webpages. Even when we can use multiple IPs and try to get around this type of limits, it’s not our policy to abuse other services, even when we can explain that we have multiple users.
That also means we won’t be “sharing” filehosters accounts. We might add an extra field or ways that you can use your filehoster account if you did buy one, but it will only be for your use, or as the filehoster’s conditions specify. We know there are other filehoster downloaders that do account sharing, but that would only mean that in the long run they will have problem with this type of services.
For the moment we will look on how to extend and better the service, but be aware that it’s not really a “bug”, when something does not download, but that there are limits on the usages on other services.