That you have mini mx? I have the mini mx 1/8 with ap6210 and it works
I have a Beelink Mini MX Version 1.0 2G/16G with AP6212 wifi chip. (Beelink Mini MX Ver 1.0 TV Box Android 5.1 2G/16G Amlogic S905)
Wifi doesn't work with firmware 8.1.6. It does work with previous firmware versions.