The main issue was that they forked UBoot and did not release their modifications, making it hard to run anything other than their Armbian fork. They forked Armbian a long time ago and kind of hacked things together rather than adding support for their HW to Armbian. After a while I gave up running anothing other than their releases, I had good experiences with the Orange Pi 3 and 5. But it's really uncool that they don't release their UBoot build! Lame! Their WiFi chip (Dragon something brand), had a bug where the WiFI beacon frames had incorrect element orderings, causing inconsistent results with some clients. Overall their Wifi was pure garbage. But apart from the Wifi it's robust stuff.