SmartThings & Yeelight Mesh BT Bulbs

20 Yeelight WiFi bulbs17=White/3=RGB connect perfectly in SmartThings App using the Yeelight Brand Devices link. Logging on is successful. (Mi Home Account Logon to Yeelight Smarthings Linkage)

The Mesh Bulbs - I haqve about 12 of them are unrelaible in SmartThiongs throught the Yeelight provided linkage.

Some are going offline immediately and remnain off line whilst others are intermiitent Online / Offline.