Torgeek
On your computer, go to Gmail. Open an email message. Hover your mouse over the thumbnail, then click Download .
Why can't I download attachments from Gmail?
Try resetting cache and data from Google Play services and Google app. next, uninstall all updates from gmail app, delete it's storage & data, Reboot your device and clear cache from recovery. Restart the device, head on to play store and update your gmail app.
