I have had a mare connecting my house systen of plugs and bulbs. I resorted to reinstalling Kaza app for older devices which worked but couldnt get bulbs to reconnect depite going in circles following all the advice. Chanced upon a fix for a different device where someone changed their phone so I tried that myself and it worked (Sort of). I can now connect the devices using old phone (iphone SE3), but the app on my daily phone (iphone 17) still refuses to operate Kaza devices. It sees them but says it has connection issues. Kaza app works on that phone. 

Is this a bug? I dont understand why the app works on one device and not the other.