Hi there! I understand you're having trouble posting a request on the BAND app using your iPhone with iOS 18.7. To get a clearer picture—when you try to post, do you see any error messages or does the app just not respond? Also, are you trying to post text, photos, or other types of content? This will help me guide you better.

Meanwhile, here are some basic steps we can try to resolve the issue:

1. Restart the BAND app: Close the app completely (double-click the Home button or swipe up from bottom and swipe up the BAND app) and then reopen it.

2. Restart your iPhone: Sometimes a quick reboot can clear temporary glitches.

3. Check for app updates: Open the App Store, search for BAND, and see if there's an update available. Running the latest version ensures compatibility with your iOS.

4. Check your internet connection: Make sure your iPhone is connected to a stable Wi-Fi or cellular network.

5. Review app permissions: Go to iPhone Settings > BAND and confirm that the app has permission to access what it needs, such as Photos or Microphone if your post includes those.

If you've already tried any of these, let me know which ones so we can go deeper into the troubleshooting. Also, sometimes BAND’s servers can experience issues, so if you want I can check that as well.

How does that sound? Are you able to try those steps and tell me what you observe?