Setting iptables OpenWrt

I have iptables, it's automatically loaded default config with the target MESH_ACL
This rule drops all connection to the device and only allow rule MESH_ACL
I try to delete but when the device rebooted the rule loaded again (auto restart after 5 minutes).
How can configure the iptables to delete the rule and allow other connections as HTTP to access the Luci web interface?
Please refer to the information below

root@OpenWrt:/# iptables --list
Chain INPUT (policy ACCEPT)
target prot opt source destination
DROP tcp -- anywhere anywhere tcp spt:ftp-data
DROP icmp -- anywhere anywhere icmp timestamp-request
MESH_ACL all -- anywhere anywhere
delegate_input all -- anywhere anywhere

Concerning the question, I can add, that in new version OpenWRT /etc/firewall.user is absent.