You can pause Qoins activity simply by turning off AutoPilot.
AutoPilot will pause your savings method from automatically working in the background. You won't see any new deposits to Qoins while AutoPilot is off.
Click here to view how to pause your payments.
Keep in mind: Deposits to Qoins already initiated, that were not canceled individually before AutoPilot was turned off, will still go through.