Hi there! I see you're encountering an issue where the Deco My Tree app keeps saying "please retry" when you try to set a password. Let's work together to get this sorted out.

To start, could you tell me a bit more about the password you're trying to set? For example:

- Are you following any specific password requirements shown in the app (like minimum length, special characters, numbers)?
- Are you using any special characters or spaces in the password?
- Does the message appear immediately after entering the password or only after you confirm it?

Meanwhile, here are some common steps to try:

1. Check Password Requirements: Make sure your new password meets all specified criteria in the app such as minimum characters, uppercase/lowercase letters, numbers, or symbols if required.

2. Avoid Common Passwords: Sometimes apps reject passwords that are too simple or commonly used. Try a more complex combination.

3. Clear App Cache (if possible): Since you’re on an iPhone with iOS 18.7.1, try closing the app completely and restarting it.

4. Update the App: Verify you have the latest version of Deco My Tree installed from the App Store.

5. Restart Your Device: A quick restart of your iPhone can clear minor glitches.

6. Try a Different Password Format: Avoid spaces or non-standard special characters, sometimes these cause input errors.

If the problem persists after these steps, you might want to check if there's an issue with the app's servers or your network connection. Let me know if you are connected to Wi-Fi or cellular and if the internet is stable.

Go ahead and try those, and let me know how it goes! I'll guide you further based on your results.