Retrieve Missing Wechat Contacts After iPhone Update To iOS 10.3

Q:"Found my Wechat contacts missing almost all after I upgrade my iPhone 7 to iOS 10.3? Could you please teach me how to do? Those contacts are relatively important for me. Please help! Thank you” Q:“After my iPhone update to iOS 10.3 my Wechat contacts gone all, not even 1 in my contact list. I’m frustrated and now I am seeking ways to get them back, please help!!! Thank you” 2 of the users above facing the similar situation after upgrade their iPhone to iOS 10.3. Their Wechat contac...