Solved

Design points

Hi!
After the last race why can't be used design points?

I don't have the most elegant answer to this, but I think it's because those design points apply to the current season only, not the new one.

But the last race is not the new season ... Why not use the design points? :-)

You cannot save up design points in the current season to be used for next season. Your car's design, as well as design points available to be allocated, are reset for next season.

@TE Palást, is it right "Abu Dhabi iGP" is the last race you mean...?

Yes, he means Abu Dhabi.