Below is the standard message you will receive to prompt phone activation.
If you have the following error message above when trying to activate office 2019/2016 with your license key please see below. To start the simple process of activation over the phone please see below
Method 1
Using: https://getcid.info/
Now click NEXT.
First select your country
Check the example of this windows below.
Copy the Installation Id displayed on step 2 to a Clipboard on your PC.