Unable to register my Cox account

When I attempt to register my Cox account by clicking the "New here? Sign up today" link, selecting the Phone number option, entering my phone number, clicking "Look up account", entering the verification code I received on my phone, clicking "Verify", selecting the correct address that's linked to my account, and clicking "Verify" again, the site errors out with ERR_TOO_MANY_REDIRECTS.  As such, I am unable to register my account.  I've tried deleting cookies as instructed on the error page, but they're just recreated and I get the same error.  I've tried the latest versions of Edge and Chrome browsers on my PC and the latest version of Safari on my iPhone with the same result.