When your ZeroTier Client is showing
NOT_FOUND as your network status, this usually means that you've entered your network ID incorrectly and are trying to join a non-existent network. Please check your network ID and try again.
Networks beginning with ea9349aa9c
There was an error in Central that allowed any user to create networks on this controller. On November 30, 2018 we sent out an email to all users that were able to create networks on this controller asking them to discontinue use of networks on this controller and transition to new networks. The networks that were erroneously created were subsequently removed on December 7, 2018.