Lte6 kit device: provider blocking traffic somehow

Hi all.
I have lte6 kit device with sim card installed. Tunnel l2tp-out1 running with no default route.
When i tools–>ping interface l2tp-out1 everything is ok.
When i install route to the tunnel and try the same ping - it is not working.

I tried to change ttl but with no success.

Anything else could help maybe ?
Long-term 6.47.9 installed, also tried different downgrades.