Linksys WRT1900ACS V2 (OpenWrt 19.07.6) WiFi Issues

I have Linksys WRT1900ACS and flash OpenWrt 19.07.6. Everything is working fine except WiFi. When I enable WiFi/Wireless without Wireless Security (No Encryption / open network) it will work but When I enable Wireless Security it will not and Marvell 88W8864 802.11acn Device is not active. Both 2.5Gz and 5 GHz does the same. I install opkg package: wpad nothing makes difference. Please help