We don't show ads to your guests. We never did, and we never will in the future. If your QR code shows ads to your guests, then it's not our QR code. Most likely, you are using some 3rd party service between your guests and us. This is not good for a couple of reasons:

1) Ads are an obvious reason.

2) Your guests have to open the 3rd party service first and then open our service from there. Which takes more time (both, in terms of clicks and loading speed) and increases the chance that something will not work.