Hi! I understand you're having trouble logging in to your IHOP account and also can't enter new rewards. Let's work through these issues together.

First, for logging in issues, can you tell me if you see any error messages when you try to log in? Sometimes forgotten passwords or app glitches can cause this.

Meanwhile, here are some straightforward steps that often fix both login and rewards issues in the IHOP app:

1. Clear Cache and Storage Data
Since your browser is WebKit on Windows 10, try clearing the cache and site data for the IHOP website or app in your browser settings. This often resolves account glitches by removing old or corrupt data.

2. Log Out Completely and Log Back In
After clearing, close the app or browser, then reopen and try to log in again. Sometimes a fresh login fixes session problems.

3. Check Internet Connection
Make sure your internet is stable. Unstable connections can interrupt login or reward syncing.

4. Update or Reinstall the App (If Using App)
If you're using the IHOP app, uninstall it, restart your device, and reinstall the latest version from the official source. Then log back in and try adding rewards again.

5. Verify Account Status
Sometimes issues with rewards not adding can occur if there’s a problem with your account status (like verification issues). If you can access your account dashboard, check for any alerts there.

If you have tried any of these steps already, please let me know which ones so I can avoid repetition and suggest other solutions.

Would you like me to guide you step-by-step through any of these, or do you have additional details about your problems?