After the 1st or 2nd season you can't development upgrades and if there's a reg change they are unable to be redeveloped until the next season. I know this probably has been posted before and seem to be getting ignored. Aswell as selecting tyre compounds for the weekend always go's back to balanced and sprinting weekend they dont work at all cus after qualifying or sprint non of the tyres have wear.
Picture below of what you get on screen when you can't make any upgrades
Also when you go assign upgrades when selecting a driver the game freezes?
