I'll answer this in english for non french speaking forumers
The winds on my site are different from those on the game. The +12 and +36 hours are already different just after the wind change times. And afterwards, the forecasts (not the +0h) are updated when they come available on the NOAA servers, i.e., at 4:30, 10:30, 16:30 and 22:30 GMT
For the polars, I have installed the ag2r race, but because of inconsistencies in the received data, the "pro" chart isn't working and I'm also not sure that the generated "standard" csv file are fully correct. The "full" csv files can't be generated yet.
Since I'm not home not at my office where are all my "tools", I'm not sure to be able to fix this before next monday.
[edit] 2 hours and 43 later, I fixed the polar chart bug and my full csv generator, so now, chart are OK and full csv should be also. I'm still not sure for certain wind speeds in the classical csv files.