Sync contacts between iPhone 8 and MacBook Air

Recently, I find I cannot sync my Contacts. I did successfully sync all else on iTunes and did back up my iPhone on iCloud. I'm sure I'm not doing something correctly. Any advice?


iPhone 8, iOS 11.2.5
Has invited:

howapple - hello

Favor from:

Thanks, Philly_Phan!!

It was checked, but I just unchecked it and then checked it on again selecting merge and all is well.


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