Board Thread:Support Requests - Getting Technical/@comment-1045511-20190213002540/@comment-13206985-20190213203118

If a category don't exists yet, I wasn't able to add it by the "add"-button next to it, at about the bottom-right side of a page.

I mainly use the editor and adding examplecategory there to get it added, then waiting some time, probably about 24 hours to let the system notice it (because after adding it, I wasn't able to add it to other pages, just by editing it like the mentioned method and after waiting about 1 day, I could directly use the "add"-button next to a "Category:" 'add'-button there)

I never had a negative amount being mentioned there. but maybe that hint could still somehow help you?