Are we talking about the same thing? Since, if I remember "The Aenar" episode correctly, the events take place on the moon orbiting the planet, with no mention of whether that is actually a gas giant or a very cloudy planet that we see in the background! (Although it did clear up why in the various series the Andorians homeworld was referred to as both Andor and Andoria).
What's there to clear up? They're from the moon, and it's called both Andor and Andoria. Just like our planet is called both Earth and Terra, and Spock's world is called both Vulcan and Vulcanis, etc.
For that matter, it's just like how the capital of China is called both Peking and Beijing. Lots of places have multiple names.