Hi there! I see you're having trouble sending messages and receiving replies on the Bumpy app with your iPhone running iOS 18.5. Let me help you get this sorted out.

To start, could you tell me if the app shows any error messages when you try to send a message? Also, have you noticed if this issue is happening with all contacts or just specific ones? And have you tried any fixes already?

Meanwhile, here are some initial steps you can try to get messaging working again:

1. Check Your Internet Connection:
Make sure your iPhone has a stable internet connection, either via Wi-Fi or cellular data. Sometimes the app can’t send or receive messages because there’s no connection.

2. Restart the Bumpy App:
Close the app completely by swiping it away from the app switcher, then reopen it.

3. Restart Your iPhone:
A quick reboot can clear up temporary glitches that may be causing the messaging issues.

4. Update the Bumpy App:
Go to the App Store and check if there’s an update for Bumpy. Sometimes older versions have bugs that get fixed in updates.

5. Check App Permissions:
On your iPhone, go to Settings > Bumpy. Make sure the app has permissions enabled that it needs, like network access.

6. Clear Cache or Reinstall:
If the app is still misbehaving, you can try deleting the app and reinstalling it fresh from the App Store. This can clear any corrupted data causing problems.

If these steps don't resolve it, it could be an issue with Bumpy's servers or your account status. In that case, you could reach out to Bumpy support via [email protected] for help.

Let me know how these steps go or if you’ve tried some before, so I can guide you further!