Also having issues connecting, but my Nanoleaf app doesn’t provide any way to connect to Matter. Perhaps because I’m on iOS.
My bulbs were working correctly for about a month, paired to a Nest Hub Max with an old Android phone. Stopped working when I got my Skyconnect dongle and configured it with multi protocol support.
On iOS I can’t get the Essentials bulbs to connect with either Google Home (recently updated to support matter pairing on iOS), or Home Assistant. The old Android phone is also not able to connect them to either Google Home or Home Assistant.