Asphalt 8: It became useless R&D rewards after Rio update

I've got this R&D Basic Kit Box reward from Mercedes-AMG C 63 Coupe Touring Car 2014 R&D test 39.

And problem is this car's engine card was changed after Rio update in Windows(and iOS, too)--to V8 engine from V6 engine. I already have enough A cards so only relevant to me is engine and mid-tech card.
So R&D kit box rewards still gave me the V6 engine which I can't use it.

I can't upgrade the car means hard to do Lab 4's tests in R&D.




Gameloft always bring the big problem in every updates, it seems.

Gameloft didn't change the reward of Kit Box. So now I've got V6 engine cards from R&D rewards. But I can't upgrade the car.

They just changed the thing--especially very important card, without thinking about it.

Very good strategy to make people to spend money on the car. Not to mention recent network errors.