The previous page is sending you to https://www.quora.com/Why-cant-I-change-the-displayed-thumbnails-of-my-YouTube-shorts-Regardless-if-I-click-on-a-different-option-or-upload-a-thumbnail-of-my-own-if-people-come-to-my-channel-they-only-see-the-thumbnail-that-YouTube.

 If you do not want to visit that page, you can return to the previous page.