FT5306 capacity touch problem

[Simone]

Hi, I'm using a display with FT5306 capacity touch panel and I'm using it with Raspberry Pi, but I'm having some problems. The first time I connected the display, it worked correctly. Then I disconnected and reconnected it again and now the touch panel doesn't work. The problem is that, when the display is not touched, the interrupt pin value is 1.3V (instead of 3.3V) and this value doesn't change when the display is touched. Maybe I need to reset something? Can anyone help me?
Thanks