Problem:
I am trying to get rid of this message - not sure what to do. My site is registered.
Solution:

Hi thank you Mateus! I had tried your Workflow a couple of times but I think this was what I was missing:

>(please make sure to enter the exact URL that appears in the url fields in the WP dashboard -> Settings -> General page)

Also for future readers - I suspect the problem was caused by "renaming" the site (assigning new domain/SSL/etc) while using the same database and db configurations as the old site.