Aurdino TM1637 x2, setting up as 2 screens...

Hi guys, sorry to bother, maybe the solution is the type that is so simple, I missed it, as it happens quiet often.

I set up the device as Aurdino nano, old bootloader, with one led matrix, 16 leds and 2x TM1637 screens (4 digits each), and uploaded to Aurdino without issues. All right pins, everything pichi.

The issue is that all works great, but I cannot see data in one of the 2 tm1637. 

Is there any specific setup I have to do in order to make work both of them on the Screen Tab, under Aurdino.

Thanks in advance.

Jey.