I paddled out and it seems some of my waves were not recorded

Have you tried adjusting the sensitivity setting? Sometimes changing the sensitivity to slower waves can help…
We do advise the medium sensitivity setting, as this setting works in most conditions.

Having said that, we do rely on the GPS information the device you use in the water provides. Most of the times this works well, but in some beaches or some occasions the GPS info is less accurate than others. With every release we improve the app and the accuracy of the measurements. We keep learning from the data we’re getting onwards.