Ensure you have a good connection to your wireless or WiFi service. Images, even those taken by your cell phone, can be large files and require a consistent connection to be uploaded to the Hale servers. Check your connection and try uploading them again.
Try quitting the Hale app and reopening it. If you have apps running in the background, they could be using up a lot of your phone's memory - try closing additional apps and reopening the Hale app. You can also try turning your phone off and turning it on again to reset its memory.
If you continue to have trouble uploading images, please contact us at firstname.lastname@example.org to report it. We'll look into the issue right away.