Hello,
You’re using old theme version and there is a bug in the theme with Visual Composer. You must update Legenda to 2.3 version as described in our documentation:
https://www.8theme.com/demo/docs/legenda/index.html#!/upgrade
We separated VC as a plugin and you need install it after the theme update.
So please read carefully our instruction.
Thank you.
Regards,
Eva Kemp.