Thanks for the reply.
The file that I downloaded was called monthly.gz but the WH only takes the below filenames so I renamed it to USER.tar.gz where USER was an actual username of the account and I got an error message
'Sorry, we were unable to transfer the account. Information about USER's primary domain is either missing or corrupt. For more information, please examine /home/cprestore/USER/cp/USER
checked 3 files.....'
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This feature will restore full backups, cpanel backups and cpanel move files in one of the following formats:
cpmove-{USER}
cpmove-{USER}.tar
cpmove-{USER}.tar.gz
USER.tar
USER.tar.gz
backup-{BACKUP-DATE_TIME}_{USER}.tar
backup-{BACKUP-DATE_TIME}_{USER}.tar.gz
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Restore for USER
Searching /home....
Found USER.tar.gz !
Extracting tarball...................
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Done
Extracting Domain....Done
Sorry, we were unable to transfer the account. Information about USER's primary domain is either missing or corrupt. For more information, please examine /home/cprestore/USER/cp/USER
checked 3 files.....