Premium paint can be still used for a while even after Premium account expires. I have obtained few hours of Premium account time from daily missions and equipped Premium paint. I was in the battle when my PA run out and the warning about this appeared. I closed the warning and I could still use my equipped Premium paint. Round ended, I stayed for next one and I could still use the Premium paint. I then visited the Garage (with "Stay in battle" option) where it was showing my tank with basic green paint. Premium paint was no more shown among my acquired paints. I closed Garage and could still use the Premium paint. I opened the Garage and tried to change my turret. When I got back to battle I lose that Premium paint at last. See attached image: I have Shaft with Viking and Premium paint even thought in the corner it is shown I no more have Premium account active. I cut parts of the screenshot so it can fit here.

Yeah. Not being allowed to buy lower modifications you now need to get enough crystals before you pass the level of next modification and the amount of needed crystals rises. Maybe it will in fact make more players buy crystals though big spenders who want to buy everything will now need less crystals in total. There will still be lots of players, though, who never buy and may rather leave if they get too low in power.

Info in garage seems bad: heal says 200 hp but icon shows 400 speed says +100 % but icon shows +30 %