Our scheduling app uses iCloud to sync data between the iPad and iPhone, and has worked fine for years until 16.3 was installed on our users' devices. NO syncing at all for many users. Some users regained syncing once the scheduling app was deleted and re-downloaded from the App Store. And, some users have not gotten the sync working (negatively affecting many users' businesses. Has anyone who uses iCloud for syncing between the iPhone and the iPad? BTW, we contacted Apple Developers support via email days ago and have yet to receive a response of any kind, even an acknowledging receiving it. Thanks in advance for any insights as to get Apple to respond.

We use a test iPad to test new versions of our app as well as checking new (beta) versions of iPadOS. Our app - Rendezvous Appointment Book -uses iCloud to sync between the iPad and iPhone. So, when an entry is made on either the iPad or iPhone the entry is automatically synced to the other device(s). So, a user can make a client appointment on one device and it syncs to another iPad or iPhone logged into the same iCloud account. This has worked smoothly for years. But, the latest beta version - 17.8 caused a syncing issue where all the existing data that is stored on the same iCloud account did not sync. We have seen this before. Recently, starting with iPadOS/iOS 16.3 syncing failed for a number of users just on their iPads. The data stored on iCloud disappeared, but the iPhone did sync with iCloud. About 30 users could not get their data to sync at all , but the vast majority did sync. Some users who experienced the problem were able to sync by deleting the app and reinstalling it from the App Store, as per our recovery instructions. Then when version 16.4 was released all syncing worked as well as 16.5 and 16.6 which have worked perfectly. When 17 beta was released we tested again for proper syncing, but ran into the same issue with version 17.3 beta - no sync again. But 17.6 beta did sync. Now, in testing this last Thursday with 17.8 beta the same issue reappeared on our test iPad. We contacted Apple Developer support but have yet to get any resolution (and we are worried that when Apple releases 17 on Sep 11 the syncing issue might still rear its ugly head). Has anyone seen this happen? BTW all other iCloud syncing worked correctly, e.g. Photos, backups, etc.

Apple has consolidated users iCloud data into iCloud.com. our app uses iCloud to sync data between iOS devices - iPad and iPhone using Core Data and iCloud Documents. But, this data is not posted on iCloud.com. It would be very useful, especially when iCloud fails to sync. When Apple does an Upgrade, say going from iOs 16to 17 and no way to retrieve the data. Any other developers concur?