If you have noticed missing galleries or favorite images, they may have been removed due to the site's current A.I. tagging policy.

A few months ago, the site implemented new policies for A.I. galleries including limiting the gallery category to "A.I. Generated" only as well as limiting use of any other tags.

Since a large portion of my A.I. galleries were made before the new policies, they were fully tagged and categorized as regular galleries. Since then, several of these older galleries were marked or flagged for removal (only some, not all) because of the wrong tags/categories. 

I have tried to go back to older galleries and change categories/tags. However, while my changes were "confirmed" by the site tools, they actual galleries still show the old categories/tags.

I will keep trying to correct the tags so just know that this is the situation if you notice more missing galleries/images.