Hello,
Regarding point 1:
I changed PCSVPN to MYVPN only for the purpose of the forum entry to be clearer. Sorry. In my config was only PCSVPN entry.
Below my config after changes. Unfortunately, I still can't connect to devices on the LAN behind the router.
# feb/15/2023 00:20:08 by RouterOS 7.7
# software id = CX3B-WEKH
#
# model = RB4011iGS+
# serial number = XXXXXXXXXXXXX
/interface bridge
add admin-mac=48:A9:8A:XX:XX:XX auto-mac=no comment=defconf name=bridge
/interface wireguard
add listen-port=13231 mtu=1420 name=PCSVPN
/interface pppoe-client
add add-default-route=yes disabled=no interface=ether1 name=pppoe-out1 \
use-peer-dns=yes user=
example@blabla.pl
/interface list
add comment=defconf name=WAN
add comment=defconf name=LAN
/interface wireless security-profiles
set [ find default=yes ] supplicant-identity=MikroTik
/ip pool
add name=dhcp ranges=192.168.88.50-192.168.88.199
/ip dhcp-server
add address-pool=dhcp interface=bridge name=defconf
/port
set 0 name=serial0
set 1 name=serial1
/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 comment=defconf interface=ether6
add bridge=bridge comment=defconf interface=ether7
add bridge=bridge comment=defconf interface=ether8
add bridge=bridge comment=defconf interface=ether9
add bridge=bridge comment=defconf interface=ether10
add bridge=bridge comment=defconf interface=sfp-sfpplus1
/ip neighbor discovery-settings
set discover-interface-list=LAN
/interface list member
add comment=defconf interface=bridge list=LAN
add comment=defconf interface=ether1 list=WAN
add interface=pppoe-out1 list=WAN
add comment="for vpn" interface=PCSVPN \
list=LAN
/interface wireguard peers
add allowed-address=10.11.0.2/32 comment="Latitude13;3" interface=PCSVPN \
persistent-keepalive=10s public-key=\
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXx="
add allowed-address=10.11.0.3/32 comment=Rmachine interface=PCSVPN \
persistent-keepalive=10s public-key=\
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXx="
/ip address
add address=192.168.88.1/24 comment=defconf interface=bridge network=\
192.168.88.0
add address=10.11.0.1/24 interface=PCSVPN network=10.11.0.0
/ip cloud
set ddns-enabled=yes ddns-update-interval=5m
/ip dhcp-client
add comment=defconf disabled=yes interface=ether1
/ip dhcp-server lease
add address=192.168.88.198 client-id=1:0:24:8c:3c:7d:ff mac-address=\
00:24:8C:3C:7D:FF server=defconf
/ip dhcp-server network
add address=192.168.88.0/24 comment=defconf dns-server=192.168.88.1 gateway=\
192.168.88.1 netmask=24
/ip dns
set allow-remote-requests=yes
/ip dns static
add address=192.168.88.1 comment=defconf name=router.lan
/ip firewall filter
add action=accept chain=input comment=\
"defconf: accept established,related,untracked" connection-state=\
established,related,untracked
add action=accept chain=input comment=Wireguard dst-port=13232 protocol=udp
add action=drop chain=input comment="defconf: drop invalid" connection-state=\
invalid
add action=accept chain=input comment="defconf: accept ICMP" protocol=icmp
add action=accept chain=input comment=\
"defconf: accept to local loopback (for CAPsMAN)" dst-address=127.0.0.1
add action=drop chain=input comment="defconf: drop all not coming from LAN" \
in-interface-list=!LAN
add action=accept chain=forward comment="defconf: accept in ipsec policy" \
ipsec-policy=in,ipsec
add action=accept chain=forward comment="defconf: accept out ipsec policy" \
ipsec-policy=out,ipsec
add action=fasttrack-connection chain=forward comment="defconf: fasttrack" \
connection-state=established,related hw-offload=yes
add action=accept chain=forward comment=\
"defconf: accept established,related, untracked" connection-state=\
established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" \
connection-state=invalid
add action=accept chain=forward in-interface-list=LAN out-interface-list=WAN
add action=accept chain=forward comment="Port forwarding" \
connection-nat-state=dstnat
add action=accept chain=forward connection-nat-state="" dst-address=\
192.168.88.0/24 in-interface=PCSVPN
add action=drop chain=forward comment="drop all else"
/ip firewall nat
add action=masquerade chain=srcnat comment="defconf: masquerade" \
ipsec-policy=out,none out-interface-list=WAN
/ipv6 firewall address-list
add address=::/128 comment="defconf: unspecified address" list=bad_ipv6
add address=::1/128 comment="defconf: lo" list=bad_ipv6
add address=fec0::/10 comment="defconf: site-local" list=bad_ipv6
add address=::ffff:0.0.0.0/96 comment="defconf: ipv4-mapped" list=bad_ipv6
add address=::/96 comment="defconf: ipv4 compat" list=bad_ipv6
add address=100::/64 comment="defconf: discard only " list=bad_ipv6
add address=2001:db8::/32 comment="defconf: documentation" list=bad_ipv6
add address=2001:10::/28 comment="defconf: ORCHID" list=bad_ipv6
add address=3ffe::/16 comment="defconf: 6bone" list=bad_ipv6
/ipv6 firewall filter
add action=accept chain=input comment=\
"defconf: accept established,related,untracked" connection-state=\
established,related,untracked
add action=drop chain=input comment="defconf: drop invalid" connection-state=\
invalid
add action=accept chain=input comment="defconf: accept ICMPv6" protocol=\
icmpv6
add action=accept chain=input comment="defconf: accept UDP traceroute" port=\
33434-33534 protocol=udp
add action=accept chain=input comment=\
"defconf: accept DHCPv6-Client prefix delegation." dst-port=546 protocol=\
udp src-address=fe80::/10
add action=accept chain=input comment="defconf: accept IKE" dst-port=500,4500 \
protocol=udp
add action=accept chain=input comment="defconf: accept ipsec AH" protocol=\
ipsec-ah
add action=accept chain=input comment="defconf: accept ipsec ESP" protocol=\
ipsec-esp
add action=accept chain=input comment=\
"defconf: accept all that matches ipsec policy" ipsec-policy=in,ipsec
add action=drop chain=input comment=\
"defconf: drop everything else not coming from LAN" in-interface-list=\
!LAN
add action=accept chain=forward comment=\
"defconf: accept established,related,untracked" connection-state=\
established,related,untracked
add action=drop chain=forward comment="defconf: drop invalid" \
connection-state=invalid
add action=drop chain=forward comment=\
"defconf: drop packets with bad src ipv6" src-address-list=bad_ipv6
add action=drop chain=forward comment=\
"defconf: drop packets with bad dst ipv6" dst-address-list=bad_ipv6
add action=drop chain=forward comment="defconf: rfc4890 drop hop-limit=1" \
hop-limit=equal:1 protocol=icmpv6
add action=accept chain=forward comment="defconf: accept ICMPv6" protocol=\
icmpv6
add action=accept chain=forward comment="defconf: accept HIP" protocol=139
add action=accept chain=forward comment="defconf: accept IKE" dst-port=\
500,4500 protocol=udp
add action=accept chain=forward comment="defconf: accept ipsec AH" protocol=\
ipsec-ah
add action=accept chain=forward comment="defconf: accept ipsec ESP" protocol=\
ipsec-esp
add action=accept chain=forward comment=\
"defconf: accept all that matches ipsec policy" ipsec-policy=in,ipsec
add action=drop chain=forward comment=\
"defconf: drop everything else not coming from LAN" in-interface-list=\
!LAN
/system clock
set time-zone-name=Europe/Warsaw
/system identity
set name=RTIK
/system routerboard settings
set enter-setup-on=delete-key
/tool mac-server
set allowed-interface-list=LAN
/tool mac-server mac-winbox
set allowed-interface-list=LAN