If you watch shows"device is offline",please check if you SIM card has enabled GPRS data and Incoming call display.
If all are OK,please send SMS command to your watches with "pw,123456,ts#",and watch will reply a SMS to your phone,then check if the IP address is correct.
Please check the IP address below:
Europe and Africa:18.104.22.168
Asia and Oceania:22.214.171.124
If you IP address is not correct,please send SMS command to change it.For example:pw,123456,ip,126.96.36.199,8001#
Change the red font with your correct IP address