Hi! I see that OctaApp is not working on your iPhone. To help you better, could you tell me a bit more about what's happening? For example, does the app close right after you open it, freeze, or simply fail to load? Also, which iPhone model and iOS version are you using?

Meanwhile, a few quick initial steps that often help with apps crashing or not working on iPhone are:

1. Force close OctaApp completely, then reopen it. You do this by swiping up from the bottom (or double-clicking the home button on older iPhones) and swiping the app away.
2. Restart your iPhone to clear any temporary glitches.
3. Check if there’s an update available for OctaApp in the App Store and install it if so.
4. Make sure your iOS is up to date - go to Settings > General > Software Update.

If the app still misbehaves after this, let me know any error messages or unusual behavior you see, and we can dive deeper into fixing it for you.

Does that sound good to you so far?