TOPIC: Sound only from one channel in Polyphone

When I play a key using Polyphone inner virtual keyboard to tyy a preset or instrument or sample I only hear it from one channel (left or right) not in stereo mode.
I tried to change sound settings but nothing happen.
Please have a look at the attached file.

please attach a sf2 file, with 1 or 2 samples that show the problem.
(nice picture, but only tells me you are Italian)
regards bottrop

Yes, I'm Italian
The problem shows with all soundfonts, so I'm attaching just a simple one.

the problem is your Pan settings
if you want a sample to sound from the left (apart from the fact that instruments that produce different sounds for the left and the right ear dont exist) set Pan -(minus)50, from the right; +50
regards

I had closed and forgotten the panel with pan level and others knobs.
Thank you!