Hi @david,
The Oura ring is not always reliable. Sometimes, it considers an afternoon nap as a night of sleep. Therefore, it is not possible to correct the data on the Oura platform.

It is possible to correct the data from intervals.icu. However, the synchronization window will overwrite the modification. I have several questions: what is this synchronization window? Could it be customizable? How can I correct the data without it being overwritten in the next synchronization?
Thanks.