Hi @cndyhuang, you can read a little bit about the DNS records required at our custom domains help article.
In “short”, if you want to use your “apex” domain (cindyhuang.me instead of www.cindyhuang.me) you’ll need to use an A record instead of a CNAME record. The A record will need to use the IP address for glitch.edgeapp.net, which you can find here.
Hope this helps!