Hey there, this is happening because the custom domain you’re trying to use already exists on Netlify under a different account.
% host -t txt verified-for-netlify.ikarialeanbodyjuice.com
Host verified-for-netlify.ikarialeanbodyjuice.com not found: 3(NXDOMAIN)
You need to verify domain ownership . Please write back in when this is set. If the verification is successful we can remove the domain from the other account so you can use it on yours.