Asphalt 8 purchases not working properly + other bugs

My purchases from Hydrogen doesn’t appear on the Lume Pad, and if I try to purchase again the system does nothing (because it detects is already purchased, I guess). Also I can’t continue gamesave from Hydrogen (If I can’t use gamesave from Hydrogen is ok for me, I can start the game again, but on other platforms cloud save works correctly).

Also they can take advantage to fix smoke tire because it appears nearer too near to the eyes, and also appearing in front of car instead on the back, is strange to see smoke on the road before your car actually step that floor.

That happens also with other smoke types, not only from the tires. It annoys my eyes, screenshots: