I’ve also got one of these TCL Heat pumps, would love to integrate it into HASS!
TCL 2.6KW - MIRACLE INVERTER HEATPUMP 9000 BTU WITH WIFI (TAC-09CHSA/VA)
It uses the “Intelligent AC” app, whose icon looks VERY similar to the “TFIAC” app, but it is different enough that it doesn’t work.
Here’s a link to the apple Apps store: https://apps.apple.com/us/app/intelligent-ac/id1451039299
And to google app store https://play.google.com/store/apps/details?id=com.ab.smartDevice&hl=en_NZ&gl=US
Edit - I found this thread [SOLVED: for local access]A/C app named TFIAC, anyone ever heard of it? - #7 by Joan_Palots
However it looks like Aircons controlled by “Intelligent AC” doesn’t work with this integration 