How to approve from another device after updating my iPad?

I just did an update and now I am told to Approve this iPad. It says Go one of your other Devices signed in to ICloud to approve this iPad. When I do that, I do not see any message or anything do approve the iPad.

i have this question too

No that is not it

It most likely sent the message to the email in your Apple ID

Two-factor authentication for Apple ID - Apple Support

MCDenver,

It sounds to me like you are being presented with Two-Step Verification: Frequently asked questions about two-step verification for Apple ID - Apple Support

...or Two Factor Authentication: Two-factor authentication for Apple ID - Apple Support