Assuming you are referring to the unstoppable feedback survey popup ...
It's a (very annoying) 'feature' of the Khoros platform. Same behaviour happens on the BT forum. It's been mentioned many times on here in the past but there has been no interest from the powers that be in changing the functionality of the survey popup.
Choose to 'Accept' cookies at the top of the forum page (not general VM cookies but those for the forum).
Once the irritating survey popup appears, click 'No' and the popup should not reappear for 90 days.