Regarding the clause:
Air servers and software procedures acquire only personal data which are strictly necessary for the technical functioning of the service, for example IP address. These data are not collected to identify, through elaboration or any other technique, users' personal identities. These data are not transmitted to third parties.
This is ambiguous because it's equivalent to saying: "we acquire your IP but we don't collect it to identify you". So from that clause one can't actually infer whether or not you're logging IP addresses.
Actually to understand the above you should have a basic knowledge of how the Internet works and the meaning of logging. In a few words, any server must know your IP address to communicate with your node for all the time you remain connected to any service. This IP address, in our case, stays in RAM and no action, transfer, storage of it etc. is performed after the disconnection.
The data that are permanently stored are those that you inserted when you registered your account and subscribed it (examples: username, password, subscription start and end date).
But whatever this data transmission is, it's done to "erogate efficiently the AirVPN service". Now, I'm sorry, but "erogate" is not a word (it's neither in the Oxford English Dictionary, nor in Merriam-Webster's). So that also needs clarification (or rather, re-writing).
It is an archaic transitive verb that means "deal out" in this case, as clearly reported by the Webster dictionary.
You say that IPs are not logged but that "Data are deleted as soon as they are no more necessary for such purposes". Sounds contradictory: So you don't log IPs but you delete them? WTF? How can you delete something that you haven't recorded?
Yes. You must be aware that "logging" meaning can't in any way be extended to "storing in RAM while the connection is active". Otherwise ANYTHING would be "logged" on the Internet and the meaning of logging would be useless. If nothing were stored in RAM there would be no communication and the Internet (or any other network) would not work at all.
Assuming the data is users' web traffic, again, that needs clarification: I thought I was connecting to one server at a time. Is my traffic being routed through more than one server?
We use frontend and backend servers, and we also have a "micro-routing" system as an useful feature, so yes. This is actually a good feature for privacy, because users data, certificates etc. are not stored on the VPN servers or on the web frontend servers. Additionally this lets you access various geo-discriminatory services even from VPN servers that are located outside the country of the service you access (example, you can watch BBC in UK from a non-UK VPN server).
I'm actually more confused than I was before.
Look, please don't take this the wrong way. I do believe that privacy is important to you, it's important to me too, I'm on your side here. But your privacy notice still has a few cloudy areas, please make it clearer, I look forward to hearing your clarification on the above points.
We're glad to know it and we hope we have clarified your doubts now.