Messed up conf: keypress gives me 32 chars instead of 44

[wid]

Hi,

I was using ykpersonalize to output the serial in usb (serial-usb-visible).
During my tests I changed a setting and I now get a 32 chars OTP key instead of the default 44-char Yubico OTP key when touching the button.

I would like to get back to normal behaviour but I don't understand which switch I used so I can't switch it back.