@meganconferwith
Is the Registration No. paragraphs added through WP AutoTerms Compliance Kit, maybe Links to Legal Pages? You can go to WP AutoTerms > Compliance Kits > Links to Legal Pages to verify. If so, you can update it from there.
If not, it’s most likely from your theme and/or Elementor. You can check in Appearance > Themes > Widgets > Footer maybe or go to Elementor configuration.