I fixed the problem when I do factory restore, delete the account from my obi devices, restart all of my network in the house and change the internet cable to obi, add the same device as new to my account and work now but I'm able to make outgoing or incoming calls but don't hear the receiver and the receiver cannot hear me.I hear only one click if someone pick up.If I don't pick up the call go to voicemail.Very confusing.