Help: Unable to share docs with anyone

Hi everyone,
We’re evaluating Coda for our organization, but I’ve run into an issue where I can’t share any documents:
• I’m unable to publish the doc
• I can’t send invites to anyone
• I can’t accept any incoming invites

My account is a Gmail address: swee1122222@gmail.com

Has anyone else experienced this, or does anyone know how to fix it? Thanks in advance!