Hi there! I see you're running into the QT2000a error on the QuikTrip app and can't log in, even after clearing the app cache. Let's work through this together.

Just to clarify first:
- Are you using the latest version of the QuikTrip app on your device?
- Have you checked your internet connection to ensure it's stable?
- Have you tried resetting your account password or verifying your account details?

Meanwhile, here’s a step-by-step guide to try next:

1. Check Internet Connection:
Make sure your Wi-Fi or mobile data is working fine by opening a website or another app.

2. Update the QuikTrip App:
Sometimes using an outdated app version causes login errors. Please go to the Microsoft Store (since you’re on Windows) and check for app updates. Install any available updates.

3. Verify Account Information:
Open the app and go to the profile or account section. Look for a prompt to verify your account or add a valid phone number. Sometimes the app requires this to log you in properly.

4. Reset Password:
If you haven't already, try using the "Forgot Password" option to reset your password. This ensures your account credentials are current.

5. Reinstall the App:
If none of the above work, uninstall the app completely, then reinstall it fresh. This removes any lingering corrupt data.

6. Contact Support if Needed:
If the problem persists after these steps, QuikTrip support can provide personalized help at 800-247-3452 option 6.

Let me know how these steps go, and if you want, I can help you through each part. Are you satisfied with this plan to fix the QT2000a error so far?

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