1. How do I Manage Hide/Show Copyright Content Footer Section
In WordPress Dashboard go to the Appearance submenu and click on Customize.
After clicking on customizing you will in theme Customizer.
Here you have to click on Footer Section than Copyright Content
In the Setting tab, you can hide and show the Copyright Content by clicking on the hide/show button.
Go to Customize -> Footer Section -> Copyright Content -> Settings -> Hide / Show Section
2. How do I Manage Copyright Content & Background Image
In WordPress Dashboard go to the Appearance submenu and click on Customize.
After clicking on customizing you will in theme Customizer.
Here you have to click on Footer Section than Copyright Content
In the Content tab, you will Change Copyright Content.
Go to Customize -> Footer Section -> Copyright Content -> Content