Oura confirms Ring 4 sync bug, but the fix is simple

Credit: Kaitlyn Cimino / Android Authority TL;DR Oura has confirmed that an issue with firmware version 2.13.1 is affecting the Ring 4. The bug is preventing the Ring 4 from syncing to the Oura app. Putting your smart ring on its charger, opening the app, and waiting for the ring to connect solves the problem.