ReadyNAS 102: Backing up Mac Folder using ReadyCloud desktop client

Picking this up after a while - I have just checked again at some functionality and still see a problem.  (Indeed, currently I do not have confidence that my ReadyNAS is going to provide me with a reliable back-up solution given the Time Machine problems and this: given that this is a kind of '101' purpose for a NAS, this is not good - I'm thinking 'why did I bother buying this?)

Anyway, I can still see 2 shortcomings with using the ReadyNAS desktop app as an OSX backup solution:

1. Although backing up using the desktop app appears to correctly duplicate new files and sub foldes in the backup held on the ReadyNAS, it does not remove deleted or moved ones.  So, for example, if I move a subfolder to another place within the overall structure being backed up, I end up with both the new version and the original version - so they get duplicated with the old version remaining as it is at the time of move.  I hope that's clear.  Putting it another way, the back up app does not replicate structural changes in the folder being backed up (i.e. sync).
2. Next to the backup folder In the desk top app there is never a green tick and "All Files up to date" indication - as shown at step 8 in this knowledge base article.  Instead, it just shows a greyed out sync icon and the words "Indexing ...(0%)".  Doesn't help and doesn't feel right.