Protocol IP... What is this?

[Telos 0]

Newbie question... I didn't see this in the FAQ...
What is the IP column? All things being equal, how do I choose between IPs?

https://imgur.com/1B3qBuC.png

[matts9 15]

Every VPN server has at least 4 separate entry IP addresses. The first one is recommended others may be useful if you have connectivity problems, want to use non-standard ports, tls-crypt, etc. It's pretty well documented here https://airvpn.org/specs/ (table at the bottom of the page), and here (FAQ) https://airvpn.org/faq/servers_ip/
 

[SurprisedItWorks 55]

As matts9 said but note that this is only about OpenVPN.  wireguard doesn't offer this choice of IPs.  Modern OpenVPN setups at your end likely (ie should) use tls-crypt for authorization, making IP #3 the usual choice, with #4 as the backup.  IPs #1 and #2 are for the older tls-auth approach, which is inferior in some aspects.  (Staff has commented on the differences in the forum many times.)  In that case #1 would be the usual choice with #2 the backup.  So if you are using a current eddie or other up-to-date OpenVPN client, try #3 and see what happens.  I assume that if your client can't speak tls-crypt, you'll get some sort of error message.