Hi,
Over the weekend I have been trying to setup a vpn on my RB.
I have followed this guide: https://manuth.life/l2tpipsec-vpn-server-mikrotik-routeros/
But I get this error:

This occures when trying to connect to the Local AND External (ISP) IP address.
Here is my client config:

(The Preshare key is correct)
I have looked at other forum posts and tried what they suggest and still no luck.
Thanks for you help.