I would go on one page and be logged in, but when I go on another I find that I have to login, but even when I click on the login button, then type in my username and password, it doesn't go through.
I found your problem. I didn't even have to click the link.
The link/page that you're going to is on the beta version of the site that isn't meant to be used. Not sure why it's still accessible. But you shouldn't be using that version as it won't retain any information you post or have on it as it'll be reset every now and again. Please try to use the live version of the site (this one).
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