I'd really like to use this on my computer. The article says it uses the WireGuard protocol, can I just take the private key from my device, put it in a configuration file and use it?
They've said elsewhere[1] that they're are working on desktop apps. No time frame yet.
If you can extract the endpoints, private and public keys, it might work. It would be considered unsupported and might be considered a violation of the terms of use. Check the license agreement.