Wideband output to Prolink MPVI3 not working

[HT99]

Hi,

using a MPVI3 with Prolink+ on a C5, analog only. WB output works good in gauge display but not in HP tuners channel view.

I connected my wideband gauge's output wire to the Prolink blue wire (input 1) and ground wire to black on Prolink.
I added channel and transformed it to Glowshift. I can see the new channel as MPVI2.1->Glowshift (tried also input 2, had both channels displayed, no reading)

When I turn key in on position, connect scanner, other channels have a reading, but the new WB channel does not.
Any idea why?

Thanks