Bags or no bags?

I’m flying home to San Diego today. Trying to check in to my American Airlines flight, they’re telling me I can’t carry on my bag, and offering to charge me to check it.

But their web site says:

… sooo which is it? I guess I’ll check in at the counter and see. Hopefully the lines aren’t bad. 🤞

Soooo, it helps if you remember which airline you're flying on. 😂

While American does allow carry-on bags for economy tickets, United (with whom I was flying) does not.