Hi Muchroomcathy,
Thank you for bringing this to our attention. We understand the importance of having mobile-responsive listings and will have this fixed in the near future. The mobile friendly checker provides recommendations on how to improve the mobile shopping experience but it is not required. For the time being, you can fix the picture size or if you're happy with the way it looks you can leave it as is. Thank you again for the feedback.
Sincerely,
Natasha