VOX VT20 Valvetronix footswitch problems

Hello everybody! I'm having problems with my amp-switch communication(VOXVT20+). The Footswitch lights up(was tested on another vox amp and it works) but it does not change Banks or Channels on the amp. I made few schematics but can't seem to find where the problem is ://. Any advice is welcome! Greetings from Croatia!
An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.
 
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