If you've already replied to your survey, reopen the survey in BackerKit. At the top of the screen it says "Your Pledge Level" and the amount you pledged. If you click on the pledge amount, it pops up with "Your pledge information" and there's a link to change your pledge.
If you're still having some trouble, I recommend reaching out to BackerKit for support, they are really great.
How do we upgrade our pledge? I don't recall having had the option to upgrade it beyond the $1 level by now
If you've already replied to your survey, reopen the survey in BackerKit. At the top of the screen it says "Your Pledge Level" and the amount you pledged. If you click on the pledge amount, it pops up with "Your pledge information" and there's a link to change your pledge. If you're still having some trouble, I recommend reaching out to BackerKit for support, they are really great.