You can replace demo content with your own adding widgets in Footer Copyright and Footer Links area in Appearance > Widgets. Some credit card images can’t be removed as they are added in one image in the file wp-content/themes/royal/images/assets/payments.png.
When they are empty only predefined demo content can be shown and you may replace one of them or both regarding to what you wish to edit or replace with your own content. Please tell us what exactly you would like to achieve.
You may replace the image with your own changing /royal/wp-content/themes/royal/images/assets/payments.png
Text on the left can be changed completely if you will add text widget in Appearance->widgets->footer links.