RapidGator - why are some downloads refused?

RapidGator has added a feature that allows people making files available to charge an additional premium subscription fee to access the files.

This subscription being unique to each person, it is not possible to support this type of link and consequently, the download is refused.

 

How to recognize a link subject to a subscription?

They have a frame below the file information which clearly explains that you need to subscribe to specific access to retrieve the file (see screenshot below).