Dear @Abdi.SheikHassan,
The deflections / displacements are directly visualized through Paraview given that the geometry is shown in the deflected state. I suppose what you want is the displacement perturbation from the undeflected state. The undeflected state can also be visualized. I guess what is missing is a convenient way to export the differences between the deflected and undeflected state.
FYI: The new Automatic Campbell Diagram generation Code (ACDC) tool now provides a quite convenient way of automating the generation of Campbell diagrams and visualizing mode shapesf using OpenFAST: GitHub - OpenFAST/acdc: ACDC: Automated Campbell Diagram Code. I would suggest using that over the old MBC3 + Eigenanalysis + ParaView approach.
Best regards,