Here I am with my first problem

I have a modem/router/NAT with IP 192.168.13.1(fixed) and a machine running SSH/OpenVPN/DHCP/DNS with IP 192.168.13.2(fixed) and some other things which get their IP via DHCP 192.168.13.xxx .
OpenVPN runs fine except one thing- on a client machine I can ping everything from 192.168.13.2 onward, but not 192.168.13.1 itself.
I can browse to 192.168.13.1 using an SSH tunnel though (ssh x@y.org -L 127.0.0.1
So I guess something is missing in my server.conf...
Can somebody help me out?
TIA,
Heiko
server_config
port 1194
proto tcp
dev tun
ca ca.crt
cert server.crt
key server.key
dh dh4096.pem
topology subnet
server 10.8.0.0 255.255.255.0
ifconfig-pool-persist /var/log/openvpn/ipp.txt
push "route 192.168.13.0 255.255.255.0"
push "dhcp-option DNS 192.168.13.2"
push "dhcp-option DOMAIN home.arpa"
push "dhcp-option DOMAIN-SEARCH home.arpa"
keepalive 10 120
tls-auth ta.key 0
max-clients 2
user nobody
group nogroup
persist-key
persist-tun
status /var/log/openvpn/openvpn-status.log
log /var/log/openvpn/openvpn.log
verb 3
auth SHA512
tls-cipher "TLS-ECDHE-ECDSA-WITH-AES-256-GCM-SHA384:TLS-ECDHE-RSA-WITH-AES-256-GCM-SHA384:TLS-DHE-RSA-WITH-AES-256-GCM-SHA384:TLS-ECDHE-ECDSA-WITH-CHACHA20-POLY1305-SHA256:TLS-ECDHE-RSA-WITH-CHACHA20-POLY1305-SHA256"
tls-ciphersuites "TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256"
data-ciphers "AES-256-GCM:AES-256-CBC:CHACHA20-POLY1305"
cipher "AES-256-GCM"
reneg-sec 1800
server_log
OpenVPN 2.5.1 aarch64-unknown-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on May 14 2021
library versions: OpenSSL 1.1.1n 15 Mar 2022, LZO 2.10
net_route_v4_best_gw query: dst 0.0.0.0
net_route_v4_best_gw result: via 192.168.13.1 dev eth0
Diffie-Hellman initialized with 4096 bit key
Outgoing Control Channel Authentication: Using 512 bit message hash 'SHA512' for HMAC authentication
Incoming Control Channel Authentication: Using 512 bit message hash 'SHA512' for HMAC authentication
TUN/TAP device tun0 opened
net_iface_mtu_set: mtu 1500 for tun0
net_iface_up: set tun0 up
net_addr_v4_add: 10.8.0.1/24 dev tun0
Could not determine IPv4/IPv6 protocol. Using AF_INET
Socket Buffers: R=[131072->131072] S=[16384->16384]
Listening for incoming TCP connection on [AF_INET][undef]:1194
TCPv4_SERVER link local (bound): [AF_INET][undef]:1194
TCPv4_SERVER link remote: [AF_UNSPEC]
GID set to nogroup
UID set to nobody
MULTI: multi_init called, r=256 v=256
IFCONFIG POOL IPv4: base=10.8.0.2 size=252
ifconfig_pool_read(), in='no1,10.8.0.2,'
succeeded -> ifconfig_pool_set(hand=0)
ifconfig_pool_read(), in='no2,10.8.0.3,'
succeeded -> ifconfig_pool_set(hand=1)
ifconfig_pool_read(), in='no3,10.8.0.4,'
succeeded -> ifconfig_pool_set(hand=2)
IFCONFIG POOL LIST
no1,10.8.0.2,
no2,10.8.0.3,
no3,10.8.0.4,
MULTI: TCP INIT maxclients=2 maxevents=6
Initialization Sequence Completed