When trying to restore a snapshot I get a the resource you were accessing could not be found error

The Restore Droplet option for Snapshots overwrite’s Droplet’s data with the snapshot’s image. This error occurs when that Droplet your are attempting to restore no longer exists on your account, most likely after deletion.

To work around this error, you can create a new Droplet from your snapshot image. For detailed steps, see our Create New Droplets from a Snapshot guide.

You cannot change the frequency of Droplet backups, but you can use Snapshooter or the API to create daily snapshots of your Droplets.
You cannot undo restoring a Droplet from a backup, but you can use an existing snapshot to restore a Droplet to a previous point in time.
Take a snapshot of your Droplet and then create new Droplet from the snapsnot in the new datacenter.