KI Pro is supported in all 3 dvb drivers addons with same drivers. In kernel is standard dvb driver supporting single tuner/demolator with multi-standard (dvb-s/s2, dvb-t/t2, dvb-c, atsc-c). In crazycat and latest is used new unified driver with dual tuner/demod support (e.g. ready for new Wetek Air).
If you see in TVH only single standard for avl6862 you probably have wrongly cached dvb adapter config.
Try to clean it:
I don’t really understand how to do this, I have installed coreelec 20.2 on the nand and tvheadend cannot find any adapter.
This has happened when installing Android 9 on Mecool Ki Pro to go from Coreelec Leia to Nexux.