WhatsApp iCloud backup stuck
I'm not sure if this is an issue with WhatsApp, iCloud/Apple, or a combination, so I'm contacting both parties.
The WhatsApp iCloud backup feature keeps getting stuck at a certain point (e.g. x MB out of the total MB to backup). At that point it will start saying backup paused and usually will also say that it's waiting for a Wi-Fi connection even though the Wi-Fi connection is fine (tested internet simultaneously), plus Wi-Fi is not required to backup anyway.
It only occurs while including videos in the backup, but I want to include videos in the backup.
This started happening sometime within the last few days; before that it was almost always fine.
After a dozen or so minutes, I check the backup section again and usually by then it says it's all backed-up; however I have my doubts as I notice a size discrepancy between the iCloud data for WhatsApp in iPhone settings, in which it is around 10MB smaller there, about the same point where the backup freezes. I'm not sure if there is supposed to be a size discrepancy but I would like to be able to confirm that the backup is not incomplete, as this may result in issues trying to restore the data at a later date.
iPhone 7, iOS 10.3.1, WhatsApp 2.17.11. Thanks for any help.
iPhone 7, iOS 10.3.1