Website migrated from one account to another and now 404 error

Website migrated from one account to another and now 404 error

I have recently had Zoho migrate my site www.eventcover.co.nz across from an old account to my new account.

The website has been mapped to my domain successfully, however, I am now getting 404 and 301 errors and cannot access my site at all.

I understand that this may be because the old site is still licensed and may be deemed a duplicate?

What else could be the issue?  I require the site live asap.