downloading unsuccessful

I don't succeed in downloading a series of rar's.

Example
http://rapidgator.net/....part1.rar.html
http://rapidgator.net/....part2.rar.html
http://rapidgator.net/....part3.rar.html
http://rapidgator.net/....part4.rar.html

These files are 'translated' into
http://rapidgator.net/file/1e06b2615...part2.rar.html
http://rapidgator.net/file/3a86ce369...part3.rar.html
http://rapidgator.net/file/56f47a42c...part4.rar.html
http://rapidgator.net/file/afa7aa842...part1.rar.html

But the downloading is almost immediately 'completed' and each downloaded file is 24 KB.

I know there is a solution to that, but I can't find it.

It appears you are just downloading the landing page for each rapidgator download url. Copy and past one of the above URLs into your web browser and you see what I mean. If you are a not a premium member, then you have to manually enter a captcha code and wait for the download to begin. Once ready to begin, then DownloadStudio should catch the download in your web browser (if you have integrated DownloadStudio into your web browsers). If you are premium member of rapidgator, then you may get direct download access.