Anymore is an adverb that means a general amount of time, usually the present or near past. Usually it is used to say if an action or event still happens or exists.
This construction is the preferred in the US, while outside the country the standard is to keep the two words separate, any more.
It is interesting to note that when we did find instances of the one word form outside the US, it was almost always in the form of a quote, but it was not always an American quoted. One possibility is that the one word form is seen as informal, as is dialogue. Another possibility is that anymore is gaining popularity globally.
As a reminder, we have been talking about the adverb form of these words. Any more is still two words in the US when not used as an adverb.
Still, for formal writing be aware what part of speech you are using and if your audience is mainly in or outside the US.
Manager Matt Williams took Strasburg out of the game before he could get into any more trouble, allowing him to leave on a good note. [The Washington Post]
Peterson, 40, barely has time to play video games anymore, but he hopes that his Venice start-up AlphaDraft makes it easier for people to do something he struggled to do on his own: earn a living as an “eSports” player. [Los Angeles Times]
“But when I started seeing more and more beautiful girls show up, I couldn’t cry anymore,” she said. [The Independent]
If the thing that’s putting you off going is the camping, then you can’t use that as an excuse any more. [Nottingham Post]