Hi there! I see you're having trouble with the Fun Print app on your iPhone running iOS 18.5. To help you better, could you please tell me a bit more about what exactly isn’t working? For example, does the app fail to open, does it crash, or is it a printing or connectivity issue? Any error messages you see would be helpful too!

Meanwhile, here are some initial steps we can try to get the app working again:

1. Restart the App
Close the Fun Print app completely by swiping it away from the app switcher, then reopen it.

2. Check Your Connection
Ensure your iPhone has a stable Wi-Fi or cellular connection, as the app may need this to communicate with your printer.

3. Restart Your Printer and iPhone
Turn off your Fun Print mini printer, wait about 10 seconds, then power it back on. Also, try restarting your iPhone.

4. Update the App
Check the App Store for any available updates to the Fun Print app and install them.

5. Reinstall the App
If the issue persists, uninstall the app and then reinstall it from the App Store.

6. Check Printer Battery and Connection
Ensure the printer battery is sufficiently charged and that it is properly connected via Bluetooth to your iPhone.

If you have already tried any of these, please let me know which ones so I can guide you with more detailed steps or alternative solutions.

Does that sound good? Let me know what you’ve experienced so far!