Alternative to Private Root Servers

I’m new to self hosting Private Root Servers but whilst researching the topic, there was a warning discouraging their use:

Using moons is now discouraged. Please contact us for advice and alternatives.

This is me contacting for advice and alternatives… why is it discouraged and what are the alternatives?

I would be very interested in the answer to this also; one of the strengths of ZeroTier vs. alternatives is the capability of running it (if needed) on a completely air-gapped network, by running private roots / moons and providing clients a hint of how to reach one in the local configuration.

Is this no longer going to be a supported use case?

@peterM Did you read this topic?

Also I’m facing a problem, that is maybe related:
iOS + iMac (Apple) devices can not connect to windows PCs.
Some topics talk about, it has to do with the latest version (v1.14? I think)

Self hosted moon server:

win ↔ win: OK
andorid ↔ win: OK
Apple ↔ win: nothing works. No ping, no VNC, no RDP …

Warning:

Self-hosted root servers do not work with standard ZeroTier One APPs on any mobile phones!
Also, you have to manually replace planet file on each windows + Linux PC.
Read more here…