Biomes+ realism gone?

I have seen a few videos talking about how great the Biomes+ Realism add-on is for bedrock, but when I go to the marketplace it isn't there. Even a Google search shows that it once was because when I click on marketplace for that add-on it takes me to an error page. I wanted to get it but now it's just gone. Does anyone know why it's not here or if there's a way to ask the creator of the add-on why it's not on marketplace anymore?