Privacy & support access — Switch measurement off
Open Settings → Privacy, untick Measure how I use RowFold and click Save privacy settings. RowFold stops measuring your use and deletes what it already recorded about you at the same moment: the steps you'd reached are removed, and every timing and error report it kept loses its link to you.
While the switch is off, RowFold still counts how long pages take to load, because that's how it notices what's slow, but with nothing that identifies you. Tick the box again to turn measurement back on. Deleting your account removes the same things.