I resolved my using my iPhone and iPad.
On the phone I set up a hotspot with the same details as the one on the network the bulbs would connect too. Then turn your wifi off at home (or chance SSID). Then used the ipad to connect to that and used the Yeelight app to add the bulbs. Turn the hotspot off and the home network back on and it should work.
It worked fine and allowed me to add all my bulbs. Because you are signed in anything you add is shared across the servers so on my phone all the bulbs are there.
One note - if you plan to use Google Home or similar I have found I have to use the US Server for Yeelight which you can change in your settings.
Hopefully Yeelight will find a way round the problem which many have because it's very frustrating!!