When you're trying to do something, and Xfinity shows an error code APPS-04033, it's irritating. The issue is due to a glitch in the Xfinity application, and this error is usually seen when using streaming apps like Prime Video, YouTube, etc. To solve Xfinity error code apps-04033, try to restart your device and see if this solves the error code as many times; a simple restart of the device can solve the issue. Another solution is to get a unique IP address. For this, you need to purchase a premium VPN. You'll get a new IP address that can solve this issue.
See also - Comcast Email Sign-In Problems, Why is my Comcast email password not working