Hi there! I see you mentioned "not working" for ibis Paint X on your iPhone with iOS 18.6.2. Thanks for reaching out. To help you best, could you please clarify what's exactly happening?

- Does the app fail to open at all?
- Does it crash or freeze after opening?
- Are there any error messages showing up?
- Did this problem start recently or after an update?

Once I have a bit more detail, I can guide you through the right steps. Meanwhile, here are some simple and safe steps to try first for app troubleshooting on iOS:

1. Restart Your iPhone: Press and hold the power button, slide to power off, wait a few seconds, then turn it back on. This can refresh system processes.
2. Update ibis Paint X: Open the App Store, search for ibis Paint X, and see if there is an update available. An outdated app version can sometimes cause problems.
3. Close the App Completely: Double press the home or swipe up to bring the app switcher, then swipe up on ibis Paint X to close it. Open it again fresh.

If those don't help, let me know what happens and we can try some more detailed fixes, like checking storage, resetting settings, or reinstalling the app carefully so you don't lose your artworks if possible.

How does that sound? Any details you can give me will help make sure I guide you accurately!