sync from root to namespace

what exactly do you mean?

there are two 'namespace' selections in this window:

'local namespace' is where the data is synced to
and 'source namespace' is where it is synced from
the 'max depth' is the how many namespaces deep the sync should be

if that does not work for you, can you post the sync log ?
 
can you please post the log and the config ?