Without knowing a little more, it’s tough to say what’s going on, but I suspect when you recreated the storage, you connected it to a slightly different place from last time. What’s the output of cat /etc/pve/storage.cfg? The dump, images, private, snippets, and template directories are auto-created when you assign those roles to a storage pool in the PVE Datacenter.

Seeing the content of storage.cfg and maybe mount would help get this sorted, I think.