Problem with my theme

Hello everyone, I’m currently in the process of transferring a website from WordPress.com to www.ads-software.com, but I’ve got a small problem: the theme I’m using (this theme here: https://wordpress.com/theme/beacon/gdrname.wordpress.com) for my website apparently no longer exists. Is there any way of recovering this theme? Or am I doomed to change it?

Thank you in advance for your help.