DDJ-400 / Issue with Tempo Slider (right deck) - Rekordbox DJ

Hi. The Tempo Slider from deck 2 doesn´t work properly (when I slide the tempo slider down or up, both decreases the bpms, and erratically).

I have updated the firmware to 1.01 days ago and it was working fine. Now it doesnt. (I´ve tried with different usb ports and a new usb cable). I´m using it on Windows.

Please help me. The controller only have 2 months since i bought it. Thanks.