Effective this morning at 00:00 (GMT+8) A3 launched their first ever P2P English server. People who were previously in their beta program will get one week of free play time before having to begin paying to access the game.
They have posted a very detailed FAQ which should help to answer the questions you might have about this recent change. You can read the FAQ at this link.
New features that you will find in the P2P version: