Raidar cannot find my ReadyNAS Ultra 4

I have my Windows 7 PC connected direct to the NAS drive via Lan cable (from the laptop to the LAN2 connection) and when I open "My Computer" and then click on Network my Nasdrive shows up and i can access it

2. issues
1. File access and transfer via the above method is very slow. the folders and content take a very long time to load
2. When I use RAIDar i get a "RAIDar Help" page telling me that it cannot find the NASDrive on the network
- The NAS drive is connected to my routed via powerline connections since my router is in a separate room to my office. the powerline plug shows all green so thatis connected fine
- When i look at the connection at the back of the NAS there are two lights, the left is orange and the right flickers green
If i swap the connections LAN1 and LAN2 between so that the PC is now connected to the LAN1, the powerline again shows an orange light to the left

So the issues i am having are:
1. Slow folder / file load
2. Cannot connect to RAIDar

please help, thanks