Question: Ohhh Nooo a folder has appeared that I did not create called .well-known have I been hacked !?

Answer: We try to automatically add SSL certificates to your domains so you rank better on search engines and have a more secure site.  The process of generating these certificates creates the .well-known/acme-challenge/ folder on the domain.  It is safe to remove the folder if you want, however when the certificate is renewed every 90 days the folder will be re-created.