All the links in the footer should remain intact.
You can delete the links only if you purchased the pro version.
Licensing information: https://bootstrapmade.com/license/
Purchase the pro version with working PHP/AJAX contact form: https://bootstrapmade.com/buy/?theme=eStartup
Design BootstrapMade
Thanks for downloading this theme!
Theme Name: eStartup
Theme URL: https://bootstrapmade.com/estartup-bootstrap-landing-page-template/
Author: BootstrapMade.com
Author URL: https://bootstrapmade.com