ReadyCLOUD backup not deleting files

The ideal would be if we had the option to choose how the backup is synchronized - whether it keeps all copies, or mirrors the current folder that is being backed up.

My understanding, however, was that the whole idea of snapshot was to keep copies of previous versions of your files, so that when you have one of those "Crap! Why the heck did I do that!?" moments, you could retrieve a previous version of the file. If it keeps all the copies of the files regardless, snapshot seems to be a redundant feature.

I could consider using a third party app, but the appeal of ReadyCLOUD was that I can access the NAS and do backups easily from any location. I'm about to go traveling, so I need the capability. I don't currently have a router that supports VPN, so that limits me as well. Simply put, I don't think I have the time to find alternative software solutions and get it working before I leave. If I can't fix this, I will have to live with it. But it would be super if I could.