Cloud syncing issues (opens in new tab)

So I have tried Dropbox and MEGA cloud apps\. At first, the camera uploads work fine they upload instantly and automatically\. After 1 day the uploading just doesn't happen anymore\. I did not change any settings- still have camera uploads and sync set to enabled\. I didn't even have \"remove permissionss if unused\" on\. I can manually upload and transfer just fine\. So I'm not sure what's going on with my phone\.