Hi! I’m sorry to hear the Denny’s app crashes when you go to the cart and prevents you from completing checkout. Let’s work through this together.

To start, could you tell me a bit more? Does the app crash immediately when you open the cart, or only after you try to take some action (like tapping checkout or adding/removing items)? Also, have you tried any fixes yet, like restarting the app or updating it?

Meanwhile, here are some initial steps to try that often resolve app crashing issues related to the cart and checkout:

1. Force Close and Restart the App: On Windows with WebKit, close the app completely, then reopen it to clear any temporary glitches.
2. Check for App Updates: Make sure you are running the latest version of the Denny's app. Older versions can have bugs fixed in newer releases.
3. Clear Cache (if applicable): Since it’s a WebKit-based environment, clearing the browser cache or app cache might help remove corrupt data causing the crash.
4. Confirm Stable Internet Connection: An unstable connection can disrupt checkout processes.

If you’ve tried the above already, we can dig deeper into account authorization issues, corrupted cart data, or app compatibility with your Windows version. Let me know what you’ve already done and what exactly happens when the crash occurs!

Are you satisfied with these initial suggestions, or shall we proceed to more advanced steps?