Both of the drivers in your team who are visible to me have "green" BMI, if you are referring to either of these then the fact they are not losing any weight is correct. If you are referring to a different driver please provide a link.
Di Luca is fully trained in Physical attributes, I suggest you switch training to Driving Ability
Mods do not have the authority or tools to change anything in the game and Support will not intervene to correct mis-clicks. Health will recover in 20 hours so you haven't lost much.
