Can you use a wah and then have another pedal for another thing? Does this even make sense ? Do guitarist even use 2 pedals ever? I am so new to this so just asking about some thoughts I have

Latly my Code50 started to sound very un-clear & with lot of vibration (no buzz!) on low end frequencies, especially when I pluck the A & low E string toggether.

Tried different guitars, data cables. elec. cables.... tried repositioning the amp in the room, tried to tighten up all the screw... nothing helped.

Any ideas? could be firmware issue? has anyone else experienced this?

Thanks