Hello @daminou53 ,
what OS image are you using? Have you done any changes in network configuration (e.g. /etc/network/interfaces files)?
On the following lines, the connection is successfully initialized (probably with very poor signal quality) but immediately, the LTE service is restarted.
2019-02-14 11:31:58,599 - DEBUG - WAN IP 10.34.177.115, Private IP 10.21.8.1; NON-CONFLICT
2019-02-14 11:31:58,600 - INFO - WAN IP ADDRESS: 10.34.177.115 INTERFACE IP ADDRESS: 10.21.8.1
2019-02-14 11:31:58,602 - DEBUG - RSSI: 19 sigqual: 6 net-type: 7
2019-02-14 11:32:00,023 - INFO - unipi-lte version 0.18 from 2019-02-14 11:11:00.068002 - Logging started..
Are you able to provide remote access to the unit?
In the meantime, you can try to install the new beta version:
sudo apt install unipi-lte=0.19*