After updating Customify to its latest version, and testing it with the latest version of the listable theme, I noticed a compatibility issue between The Event Calendar Pro and Customify: whenever The Event Calendar Pro is active, it is IMPOSSIBLE to modify the values (font family, font size, etc) in Customify. After I deactivated The Event Calendar Pro, I could modify the values in Customify.
Since a LOT of people are using The Event Calendar Pro on their website, this is an issue you might want to check into.
From this WordPress.org review:
After updating Customify to its latest version, and testing it with the latest version of the listable theme, I noticed a compatibility issue between The Event Calendar Pro and Customify: whenever The Event Calendar Pro is active, it is IMPOSSIBLE to modify the values (font family, font size, etc) in Customify. After I deactivated The Event Calendar Pro, I could modify the values in Customify. Since a LOT of people are using The Event Calendar Pro on their website, this is an issue you might want to check into.