Greetings @nisha,
As the ToradexAI bot suggested you may have configured your access point with conflicting IP address. For example if your wired Ethernet has an ip address of “192.168.1.15”. Then you should not configure the access point with any “192.168.1.X” address, or there will be a conflict preventing SSH. I tested this myself to make sure. You should instead give your access point a different IP range as suggested. As an example here’s how I configured my access-point while still having SSH be accessible on the wired Ethernet:
# /etc/hostapd.conf
interface=uap0
ssid=test
hw_mode=g
channel=1
own_ip_addr=192.168.2.100
# /etc/systemd/network/80-wifi-ap.network
[Match]
Name=uap0
Type=wlan
WLANInterfaceType=ap
[Network]
Address=192.168.2.100/24
DHCPServer=yes
[DHCPServer]
PoolOffset=10
PoolSize=30
EmitDNS=yes
DNS=1.1.1.1
This avoids any conflict as my wired Ethernet has an address in the “192.168.1.X” range.
Best Regards,
Jeremias