Hello! I'm sorry to hear that you're encountering "Error Code 400" while trying to add coupons to your account. Let's work together to resolve this.

The "Error Code 400" typically indicates a bad request, which might be due to an issue with your input or a temporary glitch in the system. Here’s what you can do to troubleshoot:

1. Refresh the Page: Start by refreshing the web page. Sometimes simply reloading can resolve minor glitches.

2. Clear Browser Cache: Although you're using WebKit, you can clear the cache through your browser settings. Here’s how:
- Go to your browser’s settings.
- Look for the 'Privacy and Security' section.
- Find the option to clear browsing data or cache and select it.
- Make sure to select "Cached images and files" and then clear it.
- After clearing the cache, restart your browser.

3. Check Coupon Eligibility: Ensure that the coupons you’re trying to add are valid and have not expired. Sometimes restrictions on coupons can lead to errors too.

4. Disable Any VPN: If you are using a VPN, it could be causing an issue with your connection. Try disabling it and see if you can add the coupons afterward.

5. Try a Different Browser: If the issue persists, try using a different browser or device to see if that resolves the problem.

If after trying these steps you're still encountering the error, it might be a server-side issue. In that case, please reach out to Meijer support at [email protected] for further assistance, or you can check this post about ongoing website issues: link.

Let me know how it goes! Are you satisfied with the solutions I provided?