If you sent the 8 BTC in their wallet, then forget about it. It's gone
Registry Domain ID: D402200000013079079-LROR
Registrar WHOIS Server: whois.namesilo.com
Registrar URL: www.namesilo.com
Updated Date: 2020-05-31T03:45:52Z
Creation Date: 2020-03-31T07:07:38Z
Registry Expiry Date: 2021-03-31T07:07:38Z
Registrar Registration Expiration Date:
Registrar: Namesilo, LLC
Registrar IANA ID: 1479
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.4805240066
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: See PrivacyGuardian.org
Registrant State/Province: AZ
Registrant Country: US
Name Server: NS1.BITGOWALLET.ORG
Name Server: NS2.BITGOWALLET.ORG
DNSSEC: unsigned