[problem] can not find device on mipow playbulb app

Hi All,

I have a problem with Mipow Playbulb app.
After I install Mipow Playbulb app, I add new device with app but the Mipow Playbulb app can not find device, such as Sphere (BLT301W), Smart (BTL201), Garden (BLT400). Only Candle (BTL300) can be find.
Does anyone have a problem like me? And who knows how to fix this problem?
Sorry about my English vocabulary is not good!

Thanks & Best Regards !