Download the following verification files by clicking on each link below
Download File #1
Download File #2
Create a folder in your domain named ".well-known" if it does not already exist.
If you use Windows you may have to add a dot at the end of the folder name in order to create a folder with a dot at the beginning.
Create another folder in your domain under ".well-known" named "acme-challenge" if it does not already exist
Upload the downloaded files to the "acme-challenge" folder
Verify successful upload by visiting the following links in your browser
If the files do not show random alphanumeric characters or shows an error then recheck that you are uploading in the correct place.
Also try viewing the page source (Right-click then click "view page source") of the above links to make sure nothing else shows up but the verification file contents. If you use IIS then you may have to change your server config so that files without an extension (or the wildcard MIME type) serves as text/plain. Contact your host if you are unsure.