How do I apply to become an editor? (yes, I read the "Becoming an Editor" page)

I tried following the instructions to become an editor, but I can't find the correct icon by the category I was trying to apply for; instead there was another, similar icon was in its place. I tried clicking on the icon and it just took me back to the "Becoming An Editor" page. Any ideas as to why?

Some categories are not available for new editors. Additionally, I regret to say that we are not able yet to process new editor applications. There will be an announcement when this feature is again available.

Arctic said:

instead there was another, similar icon was in its place. I tried clicking on the icon and it just took me back to the "Becoming An Editor" page. Any ideas as to why?

Click to expand...

Yes, when the icon is grey it is not possible to apply for that category, and it links back to the information page. A red icon with a + sign indicates that the category can be applied for.