That .uuid file is used to identify your HA installation during upgrades (I don’t dare to touch that).
There is not much we can do with the exposed features, I’ve got the same type unit as you (but with different wifi module, and 2.5kW), FTXZ25NV1B and can only do the most basic controls via the app (the year after i bought mine the same model was upgraded with new firmware that allows more features).
Yes, I’m the maintainer of pyDaikin and the HA integration…
I’ve patched the pyDaikin package and the daikin integration in HA. Would love to get it merged into HA but it needs testing first: Daikin BRP072C42 WIFI custom component - #36 by fredrike