I finally decided to do something about this. For some reason I have not had any successful search with Routefinder the last few months. Always the same "Too many requests..." message. I have tried repeatedly on all times during the day (even when I was at work last night). Is there a hidden setting somewhere I need to activate or has the Italian company just decided to allow access to the the free version for only a handful simmers at the same time. In that case it's like a lottery and waste of our time.
Meanwhile I have been using the other free services flight plan database etc., but I still think FSC gives me the best and smoothest experience.
I'm on FSC version 9.6 rev 8. Windows 10 64bit. I have reinstalled a few times.