L2TP/SSTP - can't get traffic routed or passed over the VPN connection

General questions
4

I’m not sure that this the same issue, but you can read more VPN: hosts in remote LAN unreachable after update 1.2.3 -> 1.2 rolling - #5 by Dmitry

Can you show traceroute from L2TP or SSTP client to some host, which you can’t reach?
Change/Mask please first two octets on real ip addresses.