Spicyname say:
You login into RouterOS to check that case ? Many stuff can not work and your end-client’s can not have internet.
Try checking internet first directly from router, stuff like:
what logs say
if lte1 is detected
if lte1 is running
if I can ping internet.. todo to check is like here: http://forum.mikrotik.com/t/lhgr-lte6-kit-registered-to-network-but-ping-timeout/145685/3