Just in case anyone ever stumbles onto this problem again, I just spent 2 hours troubleshooting this issue and turns out theres 3 settings on the H9 you can access with the control app – Go to Pedal settings down the bottom then General settings, then Routing and set to Normal, this makes the pedal standard stereo in stereo out, mine was set to “wet/dry” basically one side being the dry signal and the other side being the wet signal. Hope this helps even though i’m 4 years late
