Probably the shift occurs because the EASE grid is currently not (well) supported.
How have you done the reprojection.
If I select EPSG:3973 - WGS 84 / NSIDC EASE-Grid North I get
‘This “AxisDirectcion” object is too complex for WKT syntax’
I haven’t seen it before and I don’t understand it, because I can see the WKT.