Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Step 2 8211; Transfer the contacts backup (VCard file) to your computer. Now open your Gmail account and select Contacts. Click the ‘More actions’ drop-down menu, choose Import, browse to select the specific vCard file and Import it. (You can opt to add those imported contacts to a certain group to separate them from other contacts). With Android 7, in other addition to @Dipika's helpful suggestion, I had previously configured a second account and found it useful to delete Contacts application data to reset the default account: Sometimes the WhatsApp is down and at that time WhatsApp sync can face problem. So, you should check if it is really down and that’s way it is creating problem in syncing WhatsApp.