I’d have thought that after installing the App, go to the Settings cog and What to Back up. Switch off all the backup options- Docs, Videos, Photos etc.. That should stop the tablet content being backed up. If you want to see what’s on your PC or whatever..From the front screen go to Photos and Videos. Click on the ellipses (top right and corner) Select Sort and Filter. Under Sources you can select which Devices photos you want to see. I’ve found that the BT Cloud source is basically all your mobile device photo content. In other words not the stuff on your PC (or indeed Mac I think). Hope that helps.
