Excellent product! No problem whatsoever. The "snap-lock" feature makes it very easy to use when you do not have to screw the bottle into the machine.
However, they have been inconvenienced by the Swedish manual by writing three short pressures on the carbon dioxide knob until you hear a sparkling sound.
It's much easier to keep the button pressed until you hear three puddles (about 4-5 seconds in total) and then release. By the way, they are doing in the official YouTube video!
If you want to do your own research, keep in mind that Spirit seems to be called "Fizzi" in North America and "Easy" in eg. Germany.