Hi there! I’m Grace Wilson, here to help you with your MyAccount login issue on your Mac Pro. I want to make sure we get this sorted out smoothly.

First, just to clarify—when you say "nothing happens" after entering your info and password, does the page simply stay the same without any error messages, or does it show an error? Also, are you able to reach the login page normally?

Meanwhile, here are a few simple things we can try to get started:

1. Check your internet connection: Make sure your Mac Pro is connected to the internet properly.

2. Clear your browser cache: Sometimes old data can interfere with logging in. If you're using Safari, you can clear your cache by going to Safari > Preferences > Privacy > Manage Website Data > Remove All.

3. Try a different browser: If you’re using Safari, try logging in with Google Chrome or Firefox to see if the issue repeats.

4. Check for browser updates: Make sure your browser is up to date to avoid compatibility issues.

5. Check your username and password: Double-check to ensure the credentials are entered correctly, including capitalization.

If these steps don’t work or if you receive any error messages, please let me know what you see exactly. That will help me guide you to the next steps!