Issues with the installation of pachyderm

Hi everyone,
I have an issue with the pachyderm acoustic plugin, I installed it on Rhino 6 but when I open the Material section there is no way to enter the absorption coefficient data, because the box near the frequency disappeared. I suppose there was an issue with the installation, anyone knows how can I solve it?

Hello - I guess I would check with the developers - seems to be here:


Thank you!