How to cluster my graph?

I used community detection toolbox (ComDetTBv091) for clustering my directed weighted graph. I tried to use gui but it didn't import my dataset. I called one of the clustering functions that exist in algorithms folder in the toolbox package: function VV=GCSpectralClust1(A, Kmax) A=my graph adjacency matrix and Kmax=3 (number of clusters).

The resulting figure was weird. (I attached it here). Is it correct to use the toolbox in this way?