Purchase Fuel Dont Work?

I get white screen when i try to purchase. Is there something wrong with the paywall ?

It's just left overs from when the game was p2w there is no way to buy fuel and never will be under the contract Suli has with Con

The only way for you to gain fuel now is to either loot it in game or kill Elite zombies in level 15+ zones.

I think the game might be carried to Steam in the future. I'm not sure where they are at with that but I think that was the goal. Maybe the rest of the contact can be bought off.