rtl8812AU and/or rtl8814AU drivers

[mhel]

It's now working for me.
And the fix is right here in this very same thread:

rtl8812AU and/or rtl8814AU drivers

First I've made the following modification in the /package/kernel/mac80211/files/lib/netifd/wireless/mac80211.sh : mac80211_interface_cleanup() { local phy="$1" for wdev in $(list_phy_interfaces "$phy"); do ip link set dev "$wdev" down 2>/dev/null # iw dev "$wdev" del done } That disables to remove the interface and the AP may be created than. The rest modifications with ifconfig and iwconfig were used only for disabling and restart of the interface and are not important for debugging. …

I can switch between bands, do a reboot and still working
It may not be the ideal fix, but works for me.