21.02 openvpn cant see other hosts on LAN

A bit frustrated, I have been using openwrt and openvpn for years. New router and with that, its time to deploy 21.02. Previous was Openwrt 19.07, Openvpn config worked flawlessly for tunneling in to the LAN and touching all of the hosts. VPN authenticates and allows me in, but only to the router. Now, the route appears not to be pushed, or the subnet for the tun is blocked.

config openvpn HartfordKnox
        option enabled 1
        option port 1194
        option proto udp
        option dev tun
        option server '192.168.100.0 255.255.255.0'
        option ca '/etc/openvpn/ca.crt'
        option cert '/etc/openvpn/1780PREM.crt'
        option key '/etc/openvpn/1780PREM.key'
        option dh '/etc/openvpn/dh2048.pem'
        option ifconfig_pool_persist /tmp/ipp.txt
        option push 'route 192.168.1.0 255.255.255.0'
        option push 'redirect-gateway def1'
        option status '/var/log/openvpn-status.log'
        option client_to_client 1
        option keepalive '10 60'
        option compress lzo
        option persist_key 1
        option persist_tun 1
        option verb 3
        option mute 20
uci show firewall
firewall.Allow_OpenVPN_Inbound=rule
firewall.Allow_OpenVPN_Inbound.target='ACCEPT'
firewall.Allow_OpenVPN_Inbound.src='*'
firewall.Allow_OpenVPN_Inbound.proto='udp'
firewall.Allow_OpenVPN_Inbound.dest_port='1194'
firewall.vpn=zone
firewall.vpn.name='vpn'
firewall.vpn.network='vpn0'
firewall.vpn.input='ACCEPT'
firewall.vpn.forward='REJECT'
firewall.vpn.output='ACCEPT'
firewall.vpn.masq='1'
firewall.vpn_forwarding_lan_in=forwarding
firewall.vpn_forwarding_lan_in.src='vpn'
firewall.vpn_forwarding_lan_in.dest='lan'
firewall.vpn_forwarding_lan_out=forwarding
firewall.vpn_forwarding_lan_out.src='lan'
firewall.vpn_forwarding_lan_out.dest='vpn'
firewall.vpn_forwarding_wan=forwarding
firewall.vpn_forwarding_wan.src='vpn'
firewall.vpn_forwarding_wan.dest='wan'

Can anyone see the error of my ways?
Thanks

OK, as far as I have understood:
router running OpenVPN-server has 192.168.1.1 for LAN, and 192.168.100.1 for tun, you can connect, but have not access to LAN. What does it mean masq equaling 1 for server?

I'm not sure, I built that config for 19.07, must have been three years or more, and I didn't take good enough notes. I believe it is turning the netmask on?

No, it is MASQUERADING, SNAT. It should be set for WAN, e.g., when forwarding from LAN to WAN is executed.

I still don't know why it was set to 1. I configured the 19.07 years ago, and likely followed a tutorial that is no longer available.

What is IP of your device running OpenVPN client?

Currently the router we are working on, HartfordKnox is hanging off the original 19.07 1780PREM. 1780PREM's network is 192.168.11.0

HartfordKnox:   wan inet addr:192.168.11.112  Bcast:192.168.11.255  Mask:255.255.255.0
              br-lan inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
              tun0  inet addr:192.168.100.1  P-t-P:192.168.100.2  Mask:255.255.255.255
vpn client is T-530
               tun0  inet 192.168.100.6  netmask 255.255.255.255  destination 192.168.100.5
               wlp3s0   inet addr:192.168.11.112  Bcast:192.168.11.255  Mask:255.255.255.0