Aksai didn't want to get involved in the power struggle between Haan Di and the demonic faction.
He wanted to push forward with his plan—get to Duya Forest, acquire the Aether Beast, and then figure out how to escape the Wild Devil Lands. But that was easier said than done.
Even if he managed to avoid Haitin's forces on the way in, how would he get back out? And, more importantly, could he afford to offend someone like Haitin?
If things went south, Emerald Cove could end up being dragged into the mess. Even though the island had various agreements with Haan Di and the Purple River Sect, those agreements were largely formal.
Even if the righteous forces and the Dadangar Island Alliance decided to support Emerald Cove to some extent, would that support be enough if the entire demonic faction decided to attack and besiege Aksai's home?
Aksai didn't want to find out the hard way. He already knew the answer in his heart.