Check your country setting in Windows OS.
Changed the country to US, still not enabled
Go to Help > Lightroom Registration.
See the country displayed there. This needs to be updated.
Google has placed some restrictions on the usage of Google Maps in some countries.
Most likely this is the cause: https://helpx.adobe.com/x-productkb/policy-pricing/change-country-associated-with-adobe-id .html
(I have the same issue), when we sign up for Adobe ID I think we used an address in China (or when we first register some Adobe product), and it is no longer to change the country after an Adobe ID has been created.