Whatsapp Contacts missmatch on iPhone

what’s app contacts missmatched after I backup my old chats how can i solve this problem. #help

hi, normally whatsapp contacts uses the same contacts sources present in our Phone App - Contacts - Lists (Top left corner). Make sure iCloud Contacts selected and then check whatsapp.

If multiple contacts sources selected disable other contacts sources and then checking will help fixing it.

If you are using google contacts sync option, its recommended to use icloud contacts to fix such duplicate contacts or other issues in future.