I can´t delete "ghost" app data from iCloud

Start by double-checking the process you've already attempted. Go to Settings > [Your Name] > iCloud > Manage Account Storage, then scroll down to locate the Orion Browser (or just “Orion”) entry. Tap it and choose Delete Data. If all you get is a spinning wheel followed by nothing happening, you're not alone. This is a common issue for certain apps, and there are a few additional strategies you can try.

One potential workaround is to use the iCloud website. From a desktop browser, visit iCloud.com and sign in with your Apple ID. Click your name in the top-right corner and select Account Settings. Look under Manage Apps Using iCloudto see if Orion is listed. If it appears, try selecting Delete Documents & Data from there. Sometimes, this method is more successful than deleting from the iPhone.

Another strategy involves reinstalling the Orion Browser and manually disabling iCloud syncing from within the app, if possible. After reinstalling the app, open it and check the app’s settings to see if there is an option to disable iCloud or disconnect from iCloud syncing. Even if there isn’t, simply leaving the app open for a minute may help re-establish the iCloud connection. Then, return to the iCloud storage settings on your phone and try deleting the data again. If successful, you can then delete the app once more.

It's also worth noting that iCloud sometimes takes time to reflect deletions. Even if it seems like nothing is happening, changes may be processed on Apple's servers over the course of a few hours or even a day or two. Recheck the storage periodically to see if the data disappears on its own.

If none of these steps work, your best option is to contact Apple Support. Explain that you are trying to delete residual iCloud data from an uninstalled app, but the data remains stuck and unresponsive to deletion attempts. Apple Support can escalate the issue to their iCloud engineering team, who have the tools to manually remove corrupted or persistent data containers from your account.

In addition to the excellent advice from zinacef, try installing the app, deleting any cookies and website data (history), then deleting the app.

Good luck! 👋🏼😉

Good luck and if anything comes up (like a brilliant idea 💡), I’ll post back.