The turnover requirement at 7 Melons is only 30 times for slots (300 times for table games) before the bonus balance is converted into real money.
In other words, a total turnover (NOT deposits) of 30 times (for slots) or 300 times (for table games) the bonus amount is required:
You have received CHF 10 bonus and must now wager a total of CHF 300 on slots to convert the bonus.
You have received CHF 10 bonus and must now wager a total of CHF 3000 on table games to convert the bonus.
A combination is possible at any time. The system updates your progress after each entry, regardless of the game played.
You can check the progress of your playthrough on the home page of your player account, as well as under "My History" by clicking on the last round icon.
You will find a detailed explanation with further examples in the bonus conditions.