I used to look at the FF from time to time but as Rusty also noticed, there does not appear to have a dedicated forum for specific Fiat models. It is a mismatch of everything Fiat but disappointingly, I could not even find a thread covering Fiat 126s.
My local club, The Fiat Motor Club (GB) also has a similar slogan and similar in content, a mismatch of everything Fiat. Queries regarding Fiat 126s appear non-existent as well, so 126 owners like the FF, will not get any joy from these clubs. There is an annual subscription that pays for among other things, meets/events stands and a monthly newsletter.