Login issues

Hi, I bought the game for my daughter's bday. After 1 day of playing, the game said "you have been banned due to suspicious activitiy". I wrote a mail to support, and reset password. The next day I got banned again. This time it was asking for birthday, secret question etc. Was more pain to reset again. Support replied that this happens each time when my IP changes and I should get an authenticator.
For god's sake, my internet provider gives a new IP each day, and I don't plan on buying an authenticator (or using the same phone as my daughter) just to be able to play the game! This is not a bank program, I have up-to-date antivirus protection, I never had any keylogger on my computer. I simply DON'T WANT this "protection". This looks like when you walk into a mall and they welcome you by shooting at you. We, the customers are really your enemies? Or can you disable this function if I ask?

They have a free app you can get on your smartphone that gives the one-time password--you don't have to buy the token if you have a compatible phone.

They track the ISP as a measure to combat the hi-jacking of accounts by the RMT's. If they see it has changed since last login, it flags it like that. With the one-time password key, it ignores or bypasses that IP address check.

I had this problem the day after I signed up (last Saturday) and started playing (on Sunday) on my ps3. They should take into account the geographical location of the player's ip not the fact that it is a dynamic one (being changed from day to day)... I am currently using the mobile authenticator, and am contemplating switching to a physical one once I get some money however i do not know how to switch authenticators (i can't post a new topic on this as the forums say I cannot make new topics, what level does your character have to be to allow this?), the down side of using a mobile phone one is that if the phone has to be reset or the authenticator updated, they serial key wont match what they have on file and you will be unable to access your account... the physical one doesn't have this issue....