Yes as per my previous recommendation, stay away from bridge filters unless an advanced user.
(1) WAN port is NOT usually part of the bridge.
/interface bridge port
add bridge=bridge comment=defconf interface=ether2
add bridge=bridge comment=defconf interface=ether3
add bridge=bridge comment=defconf interface=ether4
add bridge=bridge comment=defconf interface=ether5
add bridge=
bridge interface=ether1
(2) I would turn this
OFF...................
/interface bridge settings
set use-ip-firewall=
yes
(3) Can replace interface list member etherports with bridge entry
/interface list member
add comment=defconf interface=ether1 list=WAN
add interface=bridge=LAN
(4) ETHER1 is the WAN port, not the bridge.
/ip dhcp-client
add comment=defconf disabled=no interface=
bridge ?????? should be
ether1
(5) This is wrong and does not match anything else.
/ip dhcp-server network
add address=0.0.0.0/24 comment=defconf gateway=0.0.0.0 netmask=24
Suggest
/ip dhcp-server network
add address=192.168.88.0/24 dns-server=192.168.88.1 gateway=192.168.88.1
(6) Why is address DISABLED??
/ip address
add address=192.168.88.1/24 comment=defconf
disabled=yes interface=bridge \
network=192.168.88.0