I think you may be mixing up the webpages. You probably saw that error at the waterlinked address. Can you first verify that you see the Water LInked page at (http://192.168.2.94)?
If you see a webpage there, then the Water Linked system is running and connected to the ROV.
Then go to the ROV page http://192.168.2.2:2770/waterlinked and click the ‘start driver’ button. Make sure the ip/port entered is 192.168.2.94 / 80.
At this point the position should appear on the Waterlinked page (192.168.2.94).