I also noticed the BLE connection for the fairbuds is inconsistent at best too. Causing the in app battery level to display N/A and the equaliser to straight up not work. I found This post about the Bluetooth LE issue but unfortunately it timed out and locked up, stopping discussion. Even though, at least in my case, it’s STILL relevant
Edit: yes I tried every troubleshooting method suggested in this post, location services on. Reseting both earbuds and reinstallin app etc.