I am working on a dev site and updated Legenda but now the theme options in the menu builder are not available. I have another site with Legenda on it and can see the options there but not in the one I am currently working on.
I have a screen shot of the problem here Menu Issue
I think the menu was working fine until I upgraded Legenda.
Your problem is caused by “If Menu” plugin. You can change the plugin or contact plugin author to fix the issue.
Please note we don’t guarantee full compatibility of 3rd-party plugins with the theme. Sometimes, not always, you need additionally customize theme or plugin to make them work together. Unfortunately, it’s not possible for the author to make theme compatible with all the existing plugins and additional customization is outside the scope of our support (check the item support policy https://themeforest.net/page/item_support_policy )