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The setting you’re searching for is in the “Style: Menu” tab of the Theme Options panel: please locate the “Always show the menu” item and choose the “Always display the menu” option from the drop-down. Do not forget to hit “Save All Changes” and then refresh the website page for the new setting to take effect.
One thing you can do is to reinstall the theme, yet bear in mind that your Theme Options panel settings will be lost. Alternatively (or in addition to that), I can troubleshoot the problem if you can send me your admin login and password to support@satoristudio.net (no disclosure guaranteed).