Hi,
Thanks a bunch for answering anyway!
Actually, in the Customizer and under the footer section, it only shows two fields FOOTER > BOTTOM text fields, but...
.... If I select the Column Number option and then save it without any written content, it will be available in the widget area so I need to do that first and then go to the Widgets leaving the Customizer... you were right but allow me to say this, it's unusual and hard to figure it out. Guess it's for the current theme version.
I would like to suggest that you make available Fields for each Column Footer also in the Customizer, which is supposed for that.
Now the Topic has been solved. Thanks once more! 🙂