Square Enix Store keeps causing "suspicious" activity forcing me to reset password

Not sure what the cause is of this. It's on the same computer with the same WAN IP so nothing is changing. It started a few days ago I purchased a 60 day digital card and never received any order confirmation. After 15 minutes I received a suspicious activity alert (legitimate) which prevented me from logging in forcing a password reset. Today I go to the Square-Enix store again and login and it fails. 15 minutes later I get another suspicious activity alert. I can't be the only one this is happening to =/

I don't have an answer "why" this is happening but if you'd like to permanently resolve it you can add a security token device or software app to your account.