Are is accepted.
Is is correct as well. See, for example, https://ell.stackexchange.com/questions/147347/are-books-are-too-many-and-cats-are-not-enough-correct-to-say or some English grammar book.
Please use the report function. You can also post here, but you cannot count on us to see it here. I only duid, because I was active in this thread before. Else I would just miss your post.