Your config in OpenWrt is incomplete.
Check this example of mine:
network.roadwarrior=interface
network.roadwarrior.proto='wireguard'
network.roadwarrior.private_key='mplamplampla='
network.roadwarrior.listen_port='1200'
network.roadwarrior.addresses='10.0.10.1/28'
network.@wireguard_roadwarrior[0]=wireguard_roadwarrior
network.@wireguard_roadwarrior[0].persistent_keepalive='25'
network.@wireguard_roadwarrior[0].public_key='/mplamplampla='
network.@wireguard_roadwarrior[0].description='Redmi Note4 trendy'
network.@wireguard_roadwarrior[0].allowed_ips='10.0.10.2/32'
Also you need to open on the firewall in wan zone the port that wireguard will use. I see that you have opened 1194 for openvpn.
Other than that follow also @lleachii's suggestions.