During the process of data scan, your WhatsApp will be uninstalled and reinstalled again. Some installed management software on your device may remind you to "Immediately Erase" debris after WhatsApp is uninstalled. You're strongly recommended not to erase in case of data lose on WhatsApp.
Please follow the guide to make a backup on the device first to prevent data loss.
Lost data cannot be recovered completely if your lost data is overwritten or damaged.
Lost data cannot be analyzed if you don't log in WhatsApp account before scanning.
Only supports your device to recover data lost within 7days.
Go to Play Store to download and reinstall , then log in WhatsApp account to recover data.
Go to Play Store to update and log in, then data is recovered again.
Note: Don't uninstall the old WhatsApp by yourself, otherwise original data on WhatsApp is possibly deleted.
Distinguish fact that OPPO devices need timely authorized operation when prompts pop up to alert you, otherwise WhatsApp possibly fail to install.
If the scan fails all the time, restart the phone and scan again.
Usually the "Security Settings" option in USB debugging mode is turned off by default, and only after it is turned on can you have permission to access backup.
Some application by default will restart after phone is restarted, which leads in a lot of resources are occupied and connected to the network. And thus, some clicks are valid and lag. Try to shut off the network connection and then continue to operate.
After you connect phone to PC via USB cable, there is no response on device:
Scroll down the notification bar at the top of the phone, select USB option to check the USB connection mode. The phone cannot be recognized in charging mode, please switch to MTP or PTP mode as bellow: