GLTF Mesh CSS2D Annotation wrong position

https://rvr.wip.moe/ It is a little bit janky but the leftmost dot triggers an animation and on animationEnd the popup gets triggered. Now afaik this is not a single Mesh, this map is an abstract visualization of the “Ruhrgebiet”, an area in west germany where you got a lot of so called “Heaps” - hills that get created because of the mining work in the past. And every Heap is a mesh. I send you an direct-link of the blender file so you can see whats going on. Now what i need to know is, how can we separate all these sub-areas and also add a 2D Button on the center of it? because in the end, a user who is interested should be able to get more infos about these heaps. How do you control shape keys / morphing objects? I thought the way you do it is to add an animation as a sub-layer to the mesh but my colleague sent me a file with lots of layers that seem to control other layers and at this point i’m confused with blender^^ So, again thanks and would love to hear your ideas!