Apologies for bumping an old thread, but it seemed preferable to starting a new one.
I've been using AirVPN for several months now and have just started having this issue for the first time today; is there a recommended solution besides connecting to a different server? Is it a problem that should be logged somewhere when it happens?
If it's helpful, I was connected to Subra when I started seeing the captchas. I've reconnected to a different server and everything seems fine now.