The Droplet Manager is available at https://mgmt.onionz.dev - a link is provided in the top bar of this site for it.
If you see something like this appear, just keep reloading the page until it works. This is just due to class with the SSL cert and the site https://upload.onionz.dev. It can take three or four reloads sometimes before the system works. I am working to fix it but it should self-validate over time.