Compatibility of Tenda AC9 on 18.06.4

According to this[Brand*~]=tenda openwrt supports the tenda ac9.

I can't find any notes on whether it actually works perfectly and whether there is 5ghz support,etc.
Does it work fine? I'm new to openwrt flashing, so the last thing I want is a half-functioning/bricked router.

Would appreciate any help

Also, I read that the Tenda AC9 3.0 isn't supported. Mine (on router page) says - Firmware Version:
Hardware Version: V 2.0

Any way to know if V2.0 has the specs of 1.0 or the unsupported 3.0?