One out of 3 YeeLights not connecting


Hello. I just got three yeelights v2 installed on a fixture that takes 3 bulbs with one control switch.

2 of the yeelights connect with no issue but the third constantly fails.

The third one fails in yeelight app after 25% and says “cannot connect to server”. In the mi home app it connects but hangs on the room selection screen.

I am using an iPhone 8.

Tried changing to Singapore and China regions.
Multiple restarts (which is frustrating as they are all on the same powerline so reset of one resets all).

Please help!