VPN L2TP IPSEC Peplink to Mikrotik

Hello Everyone
I need some help :slight_smile:
we would like to create a tunnel between mikroitk device and a PEP30-4G and a mikroitik device.
With L2TP IPSEC avalable in peplink device,
The peplink have a public fixed IP address. Any chance to get help from you. My is behind nat and is not the server but a client
To let you know, i succeded to create a L2TP IPSEC tunnel bewteween windows device and peplink . but with Mikroitk doesnt work.
Can i get help please ?
Thank you very much

Here is mikrotik configuation :

/interface l2tp-client

add connect-to= disabled=no ipsec-secret=admin max-mru=
1500 max-mtu=1500 name=l2tp-out1 password=admin use-ipsec=yes
/interface lte apn
add apn=free default-route-distance=1
/interface lte
set [ find ] apn-profiles=free mac-address=AC:FF:FF:00:00:00 name=lte1 pin=
/ip ipsec profile
set [ find default=yes ] dh-group=modp1536 dpd-interval=10s
dpd-maximum-failures=3 enc-algorithm=aes-256 lifetime=8h
add name=olddefo
/ip ipsec proposal
set [ find default=yes ] enc-algorithms=aes-256-cbc lifetime=1d pfs-group=
add name=proposal1
/ip pool
add name=dhcp_pool0 ranges=
/ip dhcp-server
add address-pool=dhcp_pool0 interface=ether1 lease-time=1d name=dhcp1
/ip address
add address= interface=ether1 network=
/ip dhcp-server network
add address= dns-server= gateway=
/ip firewall nat
add action=masquerade chain=srcnat out-interface=lte1
/ip ipsec policy
add dst-address= dst-port=1701 protocol=udp src-address= src-port=1701

Thk you so much