Healthkit - Oura Sync Issue

We are working on the health related application and use apple health kit to sync the data from different devices like watches or ring.

We are targeting oura ring to get sleep and other parameters data. We are able to sync the data from oura for all other parameters (like pulse, respiratory rate, blood pressure, etc..) other than sleep. Surprisingly, sleep data that comes through other devices is syncing as expected from the health kit. We are even getting the data which is added manually in health kit. The only sleep data not syncing is from oura.

Can we get a document or any kind of help to sync the data from oura in to our application using health kit?

Healthkit - Oura Sync Issue
 
 
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