Bad localization of my iMac

Hello,

Since one month now, my iMac and and the iMac of my wife, are localized to the ancient home address.

I try and try many things through iCloud, account ID, address of Apple ID, Localization of iMac, I read many tutorials on it, but my problem is not solved.

I wait since today, thinking that it was a question of time, but nothing.

On Plans or iCloud.com our iMac are very bad localized (there are 10 kilometers différence between the two town), I think that it is not good, but perhaps I'm a perfectionist?

How could help me.