Hi! I see you’re having trouble logging into the AnSo Pro app on your iPhone and getting a "login fail" message. Let’s work through this together.

First, can you tell me a bit more about the situation?
- Are you sure your username and password are correct?
- Are you using any keyboard apps or input methods other than the default iOS keyboard?
- Have you recently updated the app or your iOS version?
- Is your internet connection stable? Are you on Wi-Fi or cellular data?
- Do you see any other error messages apart from "login fail"?

Once I have a bit more detail, I can suggest the best fix. Meanwhile, here are some general steps to try right away:

1. Check your credentials carefully: Sometimes auto-filled passwords or typos cause login failures. Try typing your password manually.

2. Restart the app: Close AnSo Pro completely by swiping it away in the app switcher, then reopen it.

3. Check your internet connection: Make sure you have a steady connection. Try switching between Wi-Fi and cellular data.

4. Update the app: Go to the App Store and check if there is an update to AnSo Pro. Sometimes older versions have login issues.

5. Restart your iPhone: A quick restart can refresh system settings affecting network or app functions.

6. Clear app cache or reinstall: iOS doesn't allow direct cache clearing, but you can uninstall the app and reinstall it to reset any corrupted files.

If none of these work, there might be a backend issue or account-related problem.

One note: There have been reports with other apps where login errors happened if a non-standard keyboard was used. If you use a third-party keyboard app, try switching to the default iOS keyboard and attempt login again.

Please try these steps and let me know what happens or if you get any new messages. We can dig deeper as needed! Are you able to provide any of that extra info I asked about?