This is a topic that has been raised on the Google forums:
Google Groups
However, Google have punted the issue as "works on other devices so must be device specific".
In summary:
Ellipsis 8 (aka QTAQZ3) Android version 5.1.1
Google Play wants to update Google Slides to 1.18.132.08.30 version and after a few minutes into the process the tablet restarts. The update never completes. I have attempted this a dozen times or so.
NOTE: Everything is up to date on my tablet except for Slides. I have tried factory reset multiple times. I have cleared cache. I have cleared data. I have stood on my left foot only while reciting the secret incantations on days of the month that are prime. Nothing has made a difference.
The Google Play store claims my device is compatible but nothing has allowed the update to succeed and, of course, I can't use the previous version as Slides will complain that the version on my tablet is no longer supported.
It seems like a recent update to Slides is making it incompatible with the Ellipsis 8 and Google forum has punted the issue to elsewhere.
Am I just out of luck with Slides on the Ellipsis 8 now?