Misadventures At Sea Getting Off Island

I have almost completed Misadventure at Sea. I have waited for the Seaskipper Captain on the island, who has not come. I pressed the button and I followed the green sparkles, hitting the tree. I have done /kill and come back to the island using the thing you click on the dock in Nemract. I have died doing other quests and come back to the island. Is there any way to get off the island?

 

IIRC, there are three steps I think you need to complete to get off the island.

Did you interact with the coconut, the tree, and did you dig up the sand? Someone else had a question like this and after they did all three of these steps, the Seaskipper Captain came.

 

I did all three of those things