Hello,
I would recommend you to enable Elementor for static blocks https://gyazo.com/c44ec88c0bf24793ba441ffb5b5201c6 , then go to Theme Options > Footer > Footer layout > Footer Columns > set 1. Go to Dashboard > Static blocks > create Footer static block and edit content using Elementor, then go to Appearance > Widgets > add Static blocks widget with the footer selected into Footer area.
Regards