Dynamic DNS with Digital Ocean: Configuring subdomains?

[spectrely]

Hello everyone,
I have a quick question regarding Dynamic DNS with Digital Ocean.
When I configure a new domain, for example "example.com" using the DNS RecordID as the username, and the Digital Ocean API token as my password, it works.
When I do the same thing with a subdomain, for example "vpn.example.com" it does not work.

Is there a way to have Dynamic DNS with Digital Ocean update subdomains? e.g. "vpn.example.com"
Thanks for your help!

Off topic bonus question: Any plans to roll out Gandi LiveDNS support with Dynamic DND or Let's encrypt?

[jkhii]

I will note that Gandi LiveDNS is supported in Let's Encrypt now but not for Dynamic DNS.