Verify with HTML Meta tag

From your Workspace Settings, click the Verified Domains link.

Click the Add Domain button.

Fill in the Domain field, and the Verification Method field. Click the Continue button.

The next screen provides the assigned properties for your domain's verification.

Edit your domain's home page to add the meta tag within the head tag. Terms and steps vary slightly depending on your page editor, but the source will typically look similar to the following.

Once the tag has been added and the page published, you may try a manual verification. Click the Verify button.

Even after a successful verification, be sure to retain the tag to retain your domain's verified status.

You can always return to your Verified Domains list to review or configure additional domains.