Mogstation Log In?

So I can log into the mogstation fine, the issue is that it makes me log in anytime I try to click on a page.
So for example, if I click on optional items it takes me back to the log in screen, and after I log in again, it will either take me right back to mogstation, or it will take me to the optional items page.
Then, If I try to go to page 2 of the store, it takes me to the log in screen again, then when I log in, it goes right back to page one of the store.
This has happened to me before when I was trying to pay my subscription, which is a huge problem because it basically resets you to the log in screen after every step, usually causing the payment to not go through.
I've tried using firefox and even internet explorer and I still get the same issue. Anyone know what the problem is?