If you’re having trouble with iCloudbackup not working for WhatsApp, you’re not alone. A lot of people are reporting this issue.
There are a few things you can try to fix the problem. First, make sure you’re using the latest version of WhatsApp. If you’re not, update it.
If that doesn’t work, try deleting the app and reinstalling it.
If you’re still having trouble, try restarting your device.
If all of that fails, you may need to contact Apple or …
