Hi @ric-li-c, from the image you shared it looks like you’re using A record method to use custom domain, which should work. However, I see two _vercel TXT records, you should only have 1 such record if you’re just using the A record.
Now coming to the docs, I suggest you follow the Adding & Configuring a Custom Domain guide. You can choose the nameservers method or the A record method. Both will work fine.
Let me know if you run into any issues.