I have a Deco M5 network that was set long time ago.  Because I changed my Android cell phone, I don't have the Deco app on my phone anymore.  I tried to reinstall the app.  However, it always ask me to confiture the entire deco network from beginning, which I don't want do.  Is there anyway to use the app on the existing Deco M5 network without reconfigure it?  Please help!

Thanks in advance!