Hi there! I understand you're encountering a blank white screen when trying to log in to the Express Scripts app. Let's try to get this sorted for you.

To start, could you tell me if you're using the Express Scripts website or the mobile app? Since your device is Windows with WebKit browser, I assume you're logging in via the web browser, correct?

Meanwhile, here are some initial steps we can try for the web login issue:

1. Clear your browser cache and cookies: Sometimes, stored data can cause display issues. You can do this in your WebKit-based browser's settings under Privacy or History.

2. Try accessing the login page in a private/incognito window: This disables extensions and cookies which might interfere.

3. Disable browser extensions temporarily, especially those related to ad-blocking or privacy, as they might block necessary page scripts.

4. Ensure your browser is updated: Outdated browsers can sometimes cause rendering problems.

5. Try a different browser if possible, such as Chrome or Edge, to see if the problem persists.

If you've already tried any of these, please let me know so we can explore other options. Also, do you see any error messages or is it just a plain white screen? Are you able to access other parts of the site without issue?

These steps often resolve blank screen login issues for Express Scripts users6 5.

Let me know how it goes or if you need help walking through any of these!