The online casino 7 Melons is operated by Grand Casino Kursaal Bern AG under the website www.7melons.ch.
The Grand Casino Kursaal Bern AG is supervised by the Swiss Federal Gaming Board (ESBK) and is the holder of the Swiss licence (No. 516-005/03), as well as the holder of the licence extension (No. 516-005/03-01) for the right to conduct casino games online.
Therefore, you do not have to worry about possible fraud.