@mouse77 you should be able to just use the domain as it is shown in your screenshot, if you own that domain and can change the DNS records for it at your nameserver provider.
For wildcard usage, you need to setup 2 DNS A records as a minimum. One for cloudron.indesigner.net and another one (the wildcard) for *.cloudron.indesigner.net . Both are A records and should point to your server's public IPv4 address.
