We all know that Online Flight Planner's service has been unreliable in recent months. It fetch routes from Routefinder (http://rfinder.asalink.net/free) to create files for flight simulators and addons. Routefinder has had difficulties recently (completely randomly) to fullfill those requests sent by OFP. This rendered OFP unusable and caused frustration for the users. There is no sign that this will change in the future so I ask you here about the future of the site.
Since this is a free service it's good to have it online even if it is not working sometimes and there is no sign that this will change in the future.
It is better to shutdown it if it can't provide a reliable service.