I am experiencing a strange issue since exchanging an ISP WiFi router with an Archer C7 v2 running OpenWrt 19.07.2 with latest updates.
The printer is able to connect to any other WiFi router just fine. I just select the SSID and can then enter the password. But with the OpenWrt WiFi it won't ask for a password, so the connection attempt files.
I already disabled the 5 GHz frequency (printer doesn't support 5 GHz) and switched the 2.4 GHz from "N only" to "legacy", but without success.
wifi-config
config wifi-device 'radio0'
option type 'mac80211'
option channel '36'
option hwmode '11a'
option path 'pci0000:00/0000:00:00.0'
option htmode 'VHT80'
option country 'DE'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ft_over_ds '1'
option ssid 'WLAN-NAME'
option encryption 'psk2+ccmp'
option ft_psk_generate_local '1'
option key 'PASSWORD'
option ieee80211r '1'
config wifi-device 'radio1'
option type 'mac80211'
option channel '1'
option hwmode '11g'
option country 'DE'
option path 'platform/ahb/18100000.wmac'
option htmode 'HT20'
config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ft_over_ds '1'
option ssid 'WLAN-NAME'
option encryption 'psk2+ccmp'
option ft_psk_generate_local '1'
option key 'PASSWORD'
option ieee80211r '1'