Odyssey-X86J4105 WiFi AP in 5G mode in Australia

We recently purchased a few your Odyssey boards and struggling to raise AP on Ubuntu-Mint Linux by using hostapd service. We made sure hostapd driver/lib supports 5G mode (compiled from source code).

Although in spec you say h/w supports 2.4/5GHz we wander if there any hardware limitation when WiFi radio is turned to work as AP?

If there is h/w limitation is there any workaround?

Find here platform technical details and settings used:

OS Linux Mint 19.3 Tricia
Release: 19.3
Codename: tricia

libraries used:
hostapd-2.6.tar.gz
libnl-1-1-stable.tar.xz

hostapd.conf

interface=wlo2
hw_mode=a
channel=0
country_code=AU
disassoc_low_ack=1
ieee80211d=1
ieee80211ac=1
wmm_enabled=1
ssid=xxxx
wpa_passphrase=xxxx
auth_algs=1
wpa=3
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP
rsn_pairwise=CCMP
ctrl_interface=/run/hostapd
ctrl_interface_group=0
ignore_broadcast_ssid=0