You don't tell us what error messages you get but you can try to restrict the connection to specific frequencies. In /etc/wpa_supplicant/wpa_supplicant.conf
add a line with frequencies you want to use, for example (but use your own settings for country=
, ssid=
and psk=
):
cat /etc/wpa_supplicant/wpa_supplicant-wlan0.conf
ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=DE
freq_list=2412 2417 2422 2427 2432 2437 2442 2447 2452 2457 2462 2467 2472
#freq_list=5170 5180 5190 5200 5210 5220 5230 5240 5260 5280 5300 5320 5500 5520 5540 5560 5580 5600 5620 5640 5660 5680 5700
network={
ssid="TestNet"
psk="verySecretPassword"
key_mgmt=WPA-PSK
mode=RSN WPA
}