Studio One live audio routing

What´s up guys, I´m new at this live streaming thing so I´m having some issues. Tried to get Asio Pro Link to work but couldn´t. Aux/Mic input only shows one channel on OBS, as if it was a mono channel, which is not. I´m trying to send audio through my Studio One Daw, no recordings, only live audio. Can´t make it work. I had it working before with some latency but all of a sudden, no more audio, mic/aux turned mono and I can´t make it work anymore, can´t set it on Pro Link, may be dumb, I just can´t make it work.
Intel i7 - Win10
12gb ram
Alesis Multimix 16 USB interface
 
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