"They have no plates."
Translation:De har inga tallrikar.
It should be accepted everywhere, but it hasn't been added everywhere yet. If you find a place where it's missing, just report it and we'll add it. – It's not wrong to write dom but I don't think it looks as good as using de/dem correctly. Many Swedes struggle with the difference between de and dem, and in that case it may be better to use dom than to use the wrong one. But, if you already know English, the difference should not be difficult for you, so I'd recommend using de/dem.