There’s a relay inside our units for true bypass purpose. So the click noise you can hear is normal. If it annoys you, you can use the Spillover relay mode, but you won’t have a true bypass when ACTIVE is off.
If you experienced also a click on your speakers (without signal passing thru), that can be a DC leakage from your mixer, audio interface, source,…Try another setup to identify from where this leakage is coming.
Also the Spillover mode will cancel the pop noise coming from a DC leakage.