Your domain is already parked using A record, but it is still missing the CNAME record unique to your account.
Please visit your dns management system to add CNAME record (ex. www.arsen.ftp.am - PROVIDED_NS, you can find your PROVIDED_NS at our admin page)
If you already added both A and CNAME record, allow up to 24 hours for updates to show.
** We always recommend parking using Name Servers instead of A and CNAME records.