Tried to migrate from r2152 to r3539 ==> no IPv4

Hello,
i have had a working Archer C7 V2 with relady while using r2152. After flashing r3539, i am not able to connect via wlan to the router. Has something changed in definition ?
Here is my config:
network:

onfig interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'

config globals 'globals'
option ula_prefix 'fd00::/64'

config interface 'LAN'
option force_link '1'
option type 'bridge'
option proto 'static'
option netmask '255.255.255.0'
option gateway '192.168.1.1'
option ifname 'eth1'
option ipaddr '192.168.2.1'
option multicast_querier '0'
option igmp_snooping '0'
option ip6assign '64'

config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'
option mirror_source_port '0'
option mirror_monitor_port '0'

config switch_vlan
option device 'switch0'
option vlan '1'
option ports '0 1 2 3 4 5 6'
option vid '1'

config switch_vlan
option device 'switch0'
option vlan '2'
option vid '2'

config interface 'WWAN'
option proto 'static'
option ipaddr '192.168.1.4'
option netmask '255.255.255.0'
option gateway '192.168.1.1'
option dns '192.168.1.1'
option multicast_querier '0'
option igmp_snooping '0'

config interface 'Pseudobridge'
option proto 'relay'
option ipaddr '192.168.1.4'
list network 'WWAN'
list network 'LAN'

config interface 'AP'
option proto 'none'
option multicast_querier '0'
option igmp_snooping '0'

config interface 'GUEST'
option proto 'static'
option ipaddr '192.168.5.1'
option netmask '255.255.255.0'
option gateway '192.168.1.1'
option dns '192.168.1.1'
option multicast_querier '0'
option igmp_snooping '0'
option ip6assign '64'

config interface 'WWAN6'
option proto 'dhcpv6'
option multicast_querier '0'
option igmp_snooping '0'
option reqprefix 'auto'
option reqaddress 'try'

wireless:

config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11a'
option path 'pci0000:01/0000:01:00.0'
option noscan '1'
option channel 'auto'
option country 'US'
option htmode 'VHT80'
option multicast_querier '0'
option igmp_snooping '0'
option txpower '22'
option disabled '0'
option distance '8'

config wifi-device 'radio1'
option type 'mac80211'
option hwmode '11g'
option path 'platform/qca955x_wmac'
option noscan '1'
option htmode 'HT40'
option country 'US'
option txpower '24'
option distance '15'
option multicast_querier '0'
option igmp_snooping '0'
option channel '8'

config wifi-iface
option ssid 'im6shop'
option encryption 'psk2'
option device 'radio0'
option mode 'sta'
option bssid '08:96:D7:7B:89:BA'
option key '1secret'
option multicast_querier '0'
option igmp_snooping '0'
option network 'WWAN WWAN6'

config wifi-iface
option ssid 'im6shop'
option encryption 'psk2'
option device 'radio1'
option key 'secret'
option mode 'ap'
option multicast_querier '0'
option igmp_snooping '0'
option macfilter 'allow'
option network 'AP LAN'
list maclist '7ddddddd5'

config wifi-iface
option device 'radio1'
option mode 'ap'
option ssid 'gast'
option network 'GUEST'
option encryption 'psk2'
option key 'ffffffff'
option disabled '1'

Any Tips for me ?
regards
Klaus