Theme: Baskerville by Anders Noren / Gravatar missing

Just installed and activated Baskerville a few days ago. At the bottom of posts on Baskerville, there is a nice short bio with author’s image (i.e. gravatar). I have checked my gravatar, and find nothing out of order there. Any suggestions what might be keeping my gravatar from showing up here.

My site: https://sherreymeyer.com