How To Restore WeChat Contacts After Update To iOS 12 Beta 6?

I can’t find my WeChat contacts on my iPhone 6s after upgrading to iOS 12 beta 6. I back up my iPhone to iCloud due to it can backup automatically once I set it up. However, I don’t know how to restore contacts from iCloud. Help, please. Using iCloud, you can back up your iPhone wirelessly and automatically. If you’re trying to restore WeChat contacts after update to ios 12 beta 6 by using iCloud, you may have no choice but to reset iPhone to factory settings and then choose "Restore from...