[NEBULA] L2TP/IPsec with Preshared Key

Good day All,

I'm having difficulty setting up a L2TP tunnel between my office and remote PC's coming from random WAN address.

My office has a Static Public IP that is used for the tunnel.

After a long battle, loosing hair and turning grey. I manged to get the tunnel connected. However I recieved no IP from the NSG100.

I configured a IP on my VPN adapter on my pc itself, after this I am able to connect again.

Connection failed due to security layer encountered a processing error.

Any ideas what I can try next?