The problem is that the volume knob duth nothing right know. You can turn it left or right but it stays the same level. Right know it sound really low but you can change the effect and everything else and it sound fine for being so low but i just can't change the volume. Any idea why.
Are you maybe using active pickups with a dead battery?
well apart from it being a spider, I would say your problem sounds like the slider has detached from the rotary control on the volume pot
In the settings, you could have the minimum and maximum volumes set to the same level, so that the amp is locked to a particular volume.