I'd like to complain about any Eurail pass but especially the Global Eurail monthly pass and it's workings in France. I would not recommend using it if you're main travels are in and out of France.
The whole point of the Eurail pass is having flexibility in your travels and between trips but sadly it really isn't possible.
It is absurd to me that I had to pay that much money for a free pass but I had to waste 2 whole travel days only to purchase train tickets inside of France (coming from Switzerland) and spend even more money because the pass isn't really helpful while traveling in France.
Now setting aside the fact that why should I even have to pay extra for a reservation, it is impossible to make the reservations online (especially for trains running to Paris). I tried going to a few large train stations in Switzerland and Germany and they could not help either. I had to ride to a large train station in France, waste 2 whole travel days and also pay extra.