Komen Bashibouzouk

Hello, I started the game Brave Tales some days ago, ok it’s fun, so I bought ingame money… and now I can see above game screen that as it is in Beta state, the game advancement will be wiped out. WTF. Why would you delete progression, without any previous warning (the indication box wasn’t there at first…), or why didn’t you block ingame purchase? I’d like to know more about this, and I want to know if my money will be refund in the case of a data wipeout. Thanks.