It’s no good saying the same thing three times, we need MORE information – and RTFM.
So you’ve proved you’re incompetent, let’s go back to class.
1 – Are your speakers actually working? Check powering and that you’re in the proper input.
2 – With LR mix selected (above main OP fader – blue light should be on) put Min fader to the 0dB mark and fade up a channel with some audio on it that’s routed to LR OUT.
3 – The bright flashy LED thing that us professionals call “The Meter” should be lighting up green and yellow.
4 – If it’s not, then you are listening to something on your headphones that isn’t on LR Out.
5 – Have you got a PAFL button pressed somewhere? Check ALL THREE layers.
6 – I’d have a good look at the VSX26 speaker processor if I were you – probably not configured properly.
7 – Stop flapping about like a wet hen and follow the signal path PROPERLY through the system, tracking and verifying what works along the pathway.
8 – Don’t blame the kit – most faults can be traced to the idiot who connected it up.