How can I check that the games you offer are working properly?

Each game offered by a Swiss online casino must be independently checked and certified and approved by the Swiss Federal Gaming Board (FGB). The board ensures that the version of the game on the manufacturer’s server is the correct one.
You can see which version of the game you are playing in the in-game help. For the Greentube/Novomatic Interactive games, the certified reference number appears under this link gtat-gs7.greentube.com/out.html.