There was likely a violation of the General Publishing Guidelines and/or the Mod Publishing Guidelines.
Possible violations could include the title image of your mod containing the minecraft hotbar/interface, the title image for your mod being a random image such as a picture of a cheeseburger from the internet, the title image of your mod being a zoomed-in image of a single texture from your mod, the description of your mod being letter spam to reach the 350 character limit, the description of your mod not explaining about what content is in your mod, or the content of your mod being unoriginal and basic, such as a basic enderite mod or a basic herobrine mod, although some exceptions are made on that last one if a mod is very well-made.
I would recommend re-reading all of the publishing guidelines to make sure that your mod didn't violate any of them.
There was likely a violation of the General Publishing Guidelines and/or the Mod Publishing Guidelines.
Possible violations could include the title image of your mod containing the minecraft hotbar/interface, the title image for your mod being a random image such as a picture of a cheeseburger from the internet, the title image of your mod being a zoomed-in image of a single texture from your mod, the description of your mod being letter spam to reach the 350 character limit, the description of your mod not explaining about what content is in your mod, or the content of your mod being unoriginal and basic, such as a basic enderite mod or a basic herobrine mod, although some exceptions are made on that last one if a mod is very well-made.
I would recommend re-reading all of the publishing guidelines to make sure that your mod didn't violate any of them.