Keynote for iOS - Can't Open Presentation

More from the iWork team:

Hello. Thanks so much. We appreciate your help and wanted to let you know we are aware of the file cannot open issue and continue to investigate. 

In the meantime, you may be able to resolve the issue temporarily by rebooting your device. 

If this does not help, please provide the following information:

• Does an error message appear when a file cannot be opened?
• Where are the documents stored? For example: iCloud Drive, On My Device, or a third party storage provider such as Box, Dropbox, etc?
• Could you send us a screenshot or short video that demonstrates the issue?
• Would you be able to send us a system diagnostics report for our engineers to examine?  Below you’ll find instructions for pulling the report.
  • To help us identify the incident in the logs, please note the date and time (including time zone) that the issue occurred. 

iOS System Diagnostics Report

1. Enable Logging
   1. Open this email on your device. 
   2. Download the attached file iCloud Drive Debug Logging.mobileconfig. NOTE: Once the download is complete, the profile installs directly on your device.
   3. Download the attached file iWork Collaboration Debug Logging (signed, public).mobileconfig. NOTE: Once the download is complete, the profile installs directly on your device.
   4. Restart your device, if prompted.
2. Gather Logs
   1. Go to Settings > General > Accessibility > Interaction > Assistive Touch.
   2. Tap Customize Top Level Menu.
   3. Under [X] Icons, tap the Plus (+) button.
   4. Tap on the Plus (+) icon and select Analytics.
   5. Tap the slider to enable Assistive Touch.
   6. Reproduce the issue, if possible, and record the date and time you observed the specific behavior. 

• • • You can skip this step if the issue no longer occurs. Data from the event may still show in the report. 

1. 1. Tap on the Analytics icon.
   2. Wait 15 mins for the logs to gather. 
2. Retrieve Logs
   1. Go to Settings > Privacy > Analytics > Analytics Data.
   2. Scroll down the list and tap on the file that begins with ‘sysdiagnose_' and contains the correct date and time.
   3. Tap on the file name.
   4. Tap on the Share icon to Airdrop, Message, Mail, etc.
3. Disable Logging
   1. Launch Settings.
   2. Tap General > Profiles.
   3. Tap on the profile.
   4. Tap Remove and enter passcode, if asked.

Received from the iWork team 5 days ago:

"We’re looking in to the issue reported in your Apple Discussion Forums post. We’d like to have a better understanding about what happened, but will need more information. Is it okay for us to send a follow-up email with detailed instructions?"

No word since.

A reboot does fix the issue, but only temporarily.