Thread:Hoanganh13/@comment-15575766-20150527151548/@comment-15575766-20150530071321

I saw that this has happened again about half an hour ago.

This will serve the first official warning you are getting regarding this issue. If you keep adding categories that were already on a page, it may result in a block.

I don't like blocking users, but I will if needed, so please check if a category exists already on a page before adding said category to said page.