Hi,
The picture you uploaded https://www.tvmaze.com/images/912367/brief-encounter-image-912367 does not meet the site's policy of a minimum 1280x720px resolution. Also the highest resolution available should be uploaded. I suggest you read https://www.tvmaze.com/faqs/9/data-policies to get more information about the rules. You can also find there a guideline about how to get the higher resolution pics from different network websites.
All the best.
