Hi! I’m Benjamin Carter, here to help you get your Strava app working smoothly again. I understand that the app keeps crashing and also doesn’t recognize your email during login. Let’s take a closer look so I can guide you to a fix.

To help me better tailor the solution:
1. When you say the app crashes, does it crash immediately upon opening, or specifically when you try to log in?
2. Regarding your email not being recognized—are you logging in with an email and password, or using a social login like Facebook or Google?
3. Have you tried resetting your password via the "Forgot password?" link, and does the reset email reach your inbox (including spam folder)?

In the meantime, here’s a step-by-step approach to try on your iPhone (iOS 17.6.1):

1. Force close Strava and restart your iPhone:
- Swipe up from the bottom and pause in the middle to open app switcher.
- Find the Strava app and swipe it away to close it fully.
- Power off your iPhone for 30 seconds, then turn it back on.

2. Clear any cached data and cookies related to Strava on your iPhone:
- Go to Settings > Safari > Clear History and Website Data.
This won’t affect your app data much but can help with login issues that stem from cached web data.

3. Update the App:
- Open App Store, tap your profile icon, and check if Strava has any pending updates. Installing the newest version can solve crashes.

4. Reinstall the App:
- Delete the Strava app by pressing and holding it, then tap Remove App > Delete App.
- Re-download it from the App Store. This installs a fresh copy, often fixing crashes.

5. Check for iOS Updates:
- Go to Settings > General > Software Update to ensure you have the very latest iOS patches.

If your email still isn’t recognized:
- Double-check the exact email address you used to sign up with Strava; sometimes typos happen.
- Try logging in from a different device or on a web browser at strava.com to see if the issue replicates there.
- If you do not receive a password reset email or it says email not found, it may mean your account email is different or there was a registration issue.

If these steps don’t resolve the issue, please let me know what happened at each step, and I can guide you further, potentially involving Strava’s support team at [email protected] for more account-specific assistance.

Are you comfortable trying those steps now?