On machines with a kernel >= 4 you need "kernel-module-88xxau".
It's possible it is not in the drivers feed yet, in which case you need to install it either on the commandline, or use the old Software Management plugin.
I tried these commands
opg update
opkg install kernel-module-8812au
but it didn't work
then I searched everywhere and found some file with the same name
kernel-module-rtl8812au
but it didn't work either
so what should I do now? and what do you mean by the software management plugin?