You probably tried to do too much in one day :)

Netatmo had a delay indeed. There is an option to get a developer account at Netatmo so changes get pushed to HA. But still, it has some quirks.

Advice is to work on one integration at a time, read the documentation, search for your problems. After the integration works, setup your dashboard. After that start with the automatons.

Good luck, HA it’s really worth it, invest a bit more time in it.