Thanks for your question about using the Kale theme and upgrading to the Pro version. I regret that we cannot provide detailed support for upgrading the Kale theme because it is not a BoldGrid product.
If you are trying to upgrade to the Pro version of BoldGrid then that is something we can provide assistance with, however, it is best to make sure which product you are trying to upgrade in order to avoid any unnecessary confusion.
Considering you have already contacted the developer of the Kale theme, it is best advised to wait and see if they can help you further. If you decide to not use the Kale theme, and would prefer to use BoldGrid, let us know, we’ll be happy to help.