Hey, I see the data center connector inside my ePO (5.1.0) as a valid download. I haven't checked the online sites as I don't use this software.
SVA was new with MOVE 3.5 I think, so not sure that would help for version 3?
I have 3.5 agent version so cant help much more.
But to try, we have offload scanners with VSE policies + offload scanner policies, the agent policy and then the SVA policy. SVA is probably the easiest to manage the new appliance, i think I added one IP rule but left the rest to handle it on defaults.
The offload scanners include VSE policies and offload scanner policies, this tells the scanners to do the work and when to do on demand scans.
the agent tells the systems where to connect (now to the SVA, before we had to put in IP addresses of the offload scanners.)
I agree when I setup MOVE AV it was very difficult to understand and get my head around and the documentation went not way to help this.
I would go back to your Account manager and ask for some technical help to get you setup and testing