You can do clan wars you can join clans with your clan castle and you need your town hall level to anything so you can do other stuff. You can't upgrade your clan castle the most you can upgrade your town hall to level 11.
You can do clan wars you can join clans with your clan castle and you need your town hall level to anything so you can do other stuff. You can't upgrade your clan castle the most you can upgrade your town hall to level 11.