All electronic devices will make some noise, even a unconnected resistor makes noise. The trick is to give it enough signal levels so as to drown it out.
With this in mind, first make sure you are running the latest software version.
Then, be sure you are giving it a good signal level. Make sure your guitar is running at full output, and you should see the red level light on the pedal flash occasionally.
Running it in an effects loop will help, if available. Try different cables as well. Run it in the simplest possible configuration ( guitar-pedal-amp) and see if it is still a problem).
The gentleman from Brazil may have a hardware fault – normal circuit noise will always be there – it won’t come and go – not that compression effects will make it worse.
