All i need to do after a fresh upgrade is:
go to 1. Network -> Wireless -> Enable
2. System -> reboot -> perform reboot
after that it also appears in luci network -> interfaces -> devices as phy0-ap0 . i don't need to add the wifi device. it shows automatic.
i bought in march 23 my 4gb R5C without wifi module and antennas, because the wifi version was not available as 4gb. i bought seperate my rtl8822ce wifi modul with antennas. and i'm using the raspberry pi usb c 5.1v adapter.
BTW does anyone know how to expand the storage in the eMMC drive to have at least 300mb space like in ImmortalWRT ?