blenderToUnreal

Indeed something is wrong with blender windows version not the addon, because the same addon on linux exports objects correctly and when objects are re-imported in blender they have the same scale and everything.
I did a test exporting a normal fbx from blender without the addon and tried to reimport it back. it came out very small on windows, but with the correct scale on linux.

meanwhile, you can change the scale when importing in unreal, in the import dialog to 0.01. this should fix the problem.
please tell me if this fixes the problem.