I can't login into Podcast Connect. It keeps looping

There are ongoing problems at Podcasts Connect which are causing some people to have the problem you describe. I believe Apple is aware and working on it. There isn't anything you can do about it except keep trying. You could report it to Podcasts Support, though I imagine they are well aware of it: iTunes Connect | Contact Us

You could try https://podcastsconnect.apple.com/contactus though I can't promise it will be any better. If it doesn't work, try https://getsupport.apple.com but present it as an inability to get through to Podcasts Support, not a podcasting problem - they don't deal with those.