Is there a way to adjust the styles of all links at once, for example, or do I need to make a token then apply that token to every instance of a link?

Trying to publish my Webstudio site to a subdomain of my site for testing. DNS is managed through Cloudflare. I added the records, but Webstudio isn’t getting the TXT record and going to the domain name is showing a “CNAME cross-user banned” error from cloudflare. Any idea what’s going on here?

Is there a tutorial for setting up password protection? I don't need user accounts really, just a simple password so certain pages aren't public.