So, I've heard of the aether model and during my research about it I also saw that it has been disproven through experiments.

And from my very quick look at the electric universe model (and I will admit it was very very quick and not well researched), it seems to be easily disproven even with experiments potentially doable for a science fair in an elementary school.

The speed of light (which is actually a bad name for something that should ideally be called the speed of casualty) is being "ignored" by entangled particles, yes. But that isn't being refuted by physicist, it is being researched and I will not claim I know the answer to why that is happening.

But what I don't understand how it was changing until they "set it". Do Earth's scientists have some magical device that can set it universal constants? If they don't shouldn't it be possible to prove that the speed of light is actually still changing?

And you "hinting at there being more out there" is certainly true. The question is, is what you are proposing to be out there true or is it just your belief which you cannot back with scientific, peer-reviewed and repeatedly experiementally provable. Since you only put out general statements and don't provide any sources at all, I am inclined to say that it is just your belief and not science.