First, how are you connecting the computer running Dante Controller? Are you trying to use the Dante card network ports, or the SQ built in network ports? You need to bridge the connection if you are trying to use the SQ’s built in port. (Going off memory, I believe you can find that setting in the SQ’s settings -> Audio -> IO Card menu).
Second, have you taken the free Audinate Dante online training? That might be a good place to start. There are a lot of variables that need to be considered and set properly when using Dante.