How can I turn on my iCloud Keychain?

[iMore Question]

Unable to turn on iCloud Keychain?

In system preferences, I click on iCloud. I next tick the Keychain box, enter my Apple ID password and click OK. I enter my iCloud security code and click NEXT. The next box ask me to ?Enter the verification code sent to? showing a partial phone number that is not the correct number. How do I enter the correct number to allow the verification be sent?

My computer is a 2011 iMac, Serial No D25H212GDHJW, running OS 10.10.3 Yosemite.

 

[Bigeric23]

Re: Unable to turn on iCloud Keychain?

Maybe this will help:

https://support.apple.com/en-us/HT204085