Dear Zeca Rosa,
Thank you for using HARK.
We are sorry for the late reply.
The transfer function you downloaded from our support page was generated using TSP responses whose sound source elevations are all the same. (Please see our supported hardware page for the details: https://hark.jp/document/supported/)In another words, the recording setup of the sample transfer functions are 2D, not 3D. So, the sample transfer functions that we are providing will not work for 3D setup. If you need to work with 3D setup, then you will need to create a transfer function on your own. We just released manuals for transfer function generation. (https://hark.jp/document/transfer-function-generation-manuals/)
We hope those manuals will be helpful.
HARK Support Team