I've been able to establish the connection between RUT955 (head office with static public address) and RUTX11 (remote site with 4g dynamic NAT address) but I can't get communication between both locations.
The RUTX11 dials into the RUT955.
This is what happens when I run the ipsec status command on the RUTX11
root@Teltonika-RUTX11:~# ipsec status
passth_RUT2_ph2_lan_0: 192.168.2.0/24 === 192.168.2.0/24 PASS
Security Associations (1 up, 0 connecting):
RUT2-RUT2_c: ESTABLISHED 10 minutes ago, remote public IP[remote public IP]...head office public ip[head office public IP]
Here is the configuration for the remote site
Configuration for HQ site