can not sign in to my iCloud there was a problem verifying the identity of this Mac?

If you're having trouble receiving verification codes, or your verification code is rejected

Learn how to get a verification code and sign in to iCloud with two-factor authentication. If your device is running iOS 8 or OS X Yosemite or earlier, sign in using two-step verification instead.

It would be better if you can please re-post with a screenshot, in order to understand the phenomenon better. Images/pictures speak louder than words. 

Please understand this is a public forum: While attaching a Screenshot, do not provide any personal credentials, such as Card detail, email id, apple id, IMEI number, Serial Number, Phone number, Order ID, if you are sharing a map ensure your location is not identifiable, etc.

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Hello have you been able to solve this issues

“You can not sign in to iCloud because there was a problem verifying the identity of this Mac”