This is the same issue I'm having. It's driving me nuts! I want to be able to play with my friends but when I go to log in it sends me to that page to register and it won't let me register! I already checked to make sure all my passwords are right using my email, and when I exit the page it doesn't let me log in on the launcher. Please help me!!!!
if it's looping like that try clear the internet cache and or switching browsers if using safari,opera or chrome try IE or Firefox also if you have an origin account usually the sims 3 and origin use the same email and password so also try login with the email and password of origin
if in the event you need to contact CS
