XG125w + 3G/LTE Expansion module issues

Question

Hardware: XG125w + 3G / LTE Expansion Module 
 Status: 
 Network -> Interfaces -> WWAN1 - Connected, IP Address Assigned 
 Network -> WAN Link Manager -> WWAN1_GW -> Status has red dot 
 Network -> Cellular LAN -> shows Connected Modem Name : Sierra etc. IP Address, Gateway assigned showing bytes in and out Firewall Rule: Default has Any service going to WAN when in LAN (which includes Port 1, 3, 4, 5, 6, 7, 8 and Sophos (built in SSID)) - allowed 
 all other things which could block - OFF 
 In Diagnostics PING to both IP and URL - work TRACERT to both IP and URL - work 
 POLICY test - works to any address selected. 
 The Problem 
 Access to internet is not working. Not ping, tracert, or browser 
 Yet the device itself can get to the network - can check for updates, patterns, sync's heartbeat to SS, and can ping, tracert, etc - all work. 
 Rules compared to other Sophos F/W are same - so it should not be the firewall rule (but i could be wrong) 
 Any help will be useful (I did raise a support call, but they have sort of ignored me after requesting to get onto the box)

LuCar Toni · Accepted Answer

Please check the Gateway status. Your Screenshots shows both Gateways have a red gateway (red dot). 
 Sometimes you are not able to ping via LTE, so chose another option to check the health status. 
 If the gateway is red, XG wont consider it as a valid outbound connection.