I drive all around Europe and if they asked me to pay first I'd suspect it's some kind of a scam. I used an unattended gas station for the first time few week

I drive all around Europe and if they asked me to pay first I'd suspect it's some kind of a scam. I used an unattended gas station for the first time few weeks ago and it took me 10 minutes to figure out why the diesel isn't flowing... Though I didn't even notice it's unattended at first.