Footer, generally contains data like copyright, important links. Astra offers separate Footer Widgets area and Footer Bar area (Copyright area). Settings can be found under Appearance > Customize > Layout > Footer.
This is the footer area where you can put copyright information along with widgets, menus etc. You can choose a layout for the small footer bar under Appearance > Customize > Layout > Footer > Footer Bar
Astra offers two options for the Footer Bar, but it is possible that this layout has been modified by your developer and may appear differently than as shown in the Customizer.
#1 Footer Bar Layout = It will stack the two sections of the footer bar.
#2 Footer Bar Layout = It will display both sections in line.
Astra offers two different sections for footer bar. You can choose options for each section form drop down.
You can display menu in the footer with this option.
You would need to create a menu under Appearance > Customize > Menus > Create a new menu and assign it to footer menu
You can add custom text or HTML code to the footer with this option.
It will allow you to add a widget to footer sections.
After setting widget for the footer section you can add widget under Appearance > Customize >Widgets > Footer Bar Section 1/ Footer Bar Section 2