Has anyone had success setting up native WireGuard for AirVPN on ChromeOS? Following these steps using values from AirVPN-generated WireGuard configs produced what appeared to be a complete profile but attempting to connect immediately failed with an error -126 (whatever that is) on the current Stable channel release (15183.69.0), and I am not acquainted enough with ChromeOS to know how to troubleshoot further.
The Chromebook I was tasked with setting up is not to have any Play Store (Android) or Crostini (Linux) apps, hence the strong preference for built-in support.